The research team, led by Jackson Emanuel and Marcel A. Müller with senior collaborators including Christian Drosten and Jan Felix Drexler, set out to overcome a persistent limitation of wildlife virology. Most virus discovery efforts depend on detecting viral nucleotide sequences in tissues or swabs, an approach that is highly specific but easily missed. Viral RNA concentrations vary enormously over the course of an infection, viruses concentrate in particular organs rather than in routinely sampled secretions, field samples degrade under tropical conditions, and many infections are transient. Antibodies, by contrast, persist in blood long after a virus has been cleared, providing a retrospective record of exposure. Serology therefore captures a wider window of infection than molecular detection alone.

To exploit this advantage, the investigators deployed a multiplex immunofluorescence assay capable of screening a single specimen for reactive antibodies against 14 different human-pathogenic RNA viruses spanning seven families: Coronaviridae, Flaviviridae, Hantaviridae, Paramyxoviridae, Phenuiviridae, Pneumoviridae, and Togaviridae. The assay uses virus-infected cells fixed on slides, allowing sera to be tested in parallel against multiple antigens while preserving the ability to distinguish genuine virus-specific reactivity from nonspecific background staining. This multiplexed design makes efficient use of precious wildlife samples, which are difficult and expensive to collect across remote field sites.

The scale of the survey is one of its defining strengths. The team retrospectively analyzed 1,135 bat specimens representing 16 species and 454 rodent specimens representing 15 species. The samples were collected at 63 distinct sites across seven countries, an unusually broad geographic and taxonomic footprint for a single serological study. This breadth matters because patterns of virus circulation in wildlife are shaped by local ecology, and conclusions drawn from one region or one host species may not generalize elsewhere.

The headline finding concerns tropical bats, which exhibited strikingly high rates of seropositivity against certain virus families. Overall, 42.7 percent of the tropical bats in the dataset carried antibodies reactive with members of the family Flaviviridae, and 67.7 percent showed reactivity against Paramyxoviridae, while 7.5 percent were seropositive for Togaviridae. These figures substantially exceed the prevalence typically observed in molecular screening studies, reinforcing the argument that antibody-based surveillance reveals enzootic virus circulation that sequence-based methods systematically underestimate. In practical terms, the results indicate that flaviviruses and paramyxoviruses are not occasional visitors to African fruit bat populations but established, continuously circulating residents.

Both virus families carry substantial public health relevance. The Flaviviridae include dengue, Zika, yellow fever, and West Nile viruses, while the Paramyxoviridae encompass measles, Nipah, and Hendra viruses as well as mumps and several rodent- and bat-borne relatives. Previous work has detected paramyxovirus sequences in African Pteropodidae, the family of Old World fruit bats that includes the straw-coloured fruit bat Eidolon helvum and the Egyptian rousette Rousettus aegyptiacus. The new serological data suggest that exposure to these viruses is far more common than sequence detection alone would imply, consistent with infections that are transient in individual animals but persistent at the population level.

Beyond mapping seroprevalence, the study probed the ecological determinants of infection. The authors are careful to note that confounding factors and sparse data still complicate the identification of reliable correlates of RNA virus infection in wildlife, and the models they present are explicitly provisional. Nevertheless, multivariable logistic regression analyses of the dataset pointed to one host characteristic in particular: colony size. Species that form large colonies, exemplified by Eidolon helvum and Rousettus aegyptiacus, were more likely to show seropositivity against orthoflaviviruses and orthorubulaviruses than species with smaller or more solitary roosting habits.

This association fits a well-established epidemiological principle. In large, dense, communally roosting colonies, viruses transmitted directly between individuals or through contaminated roost environments encounter a steady supply of susceptible hosts, particularly during annual pulses of newborn pups that lack maternal antibodies. High host density and repeated mixing of individuals from across vast foraging ranges create conditions favorable to sustained viral transmission, allowing bat-adapted viruses to circulate endemically rather than burning out after localized outbreaks. Eidolon helvum, which forms colonies numbering in the millions across equatorial Africa, and Rousettus aegyptiacus, which roosts in caves in dense aggregations, are both known to undertake long-distance seasonal movements that could further disperse viruses across the continent.

The findings carry implications for how viral surveillance in wildlife should be conducted and interpreted. Because molecular and serological methods capture different phases of the infection process, the authors argue implicitly that the two approaches are complementary: sequence detection pinpoints which virus is present and enables phylogenetic reconstruction, while serology quantifies how widely hosts are exposed over time. Integrating both into long-term monitoring programs, particularly at sites where large fruit bat colonies intersect with human activities such as bushmeat hunting, agriculture, and cave tourism, could sharpen risk assessments for zoonotic emergence before outbreaks occur, rather than after.

The study also underscores the remaining uncertainties in the field. Antibody reactivity against a virus family does not always identify the exact virus species involved, since closely related viruses can elicit cross-reactive responses, and sample quality, host age, sex, and seasonal effects can all influence serological results. The authors themselves emphasize that the regression findings should be treated as provisional within this dataset rather than as definitive laws of bat virology. Even so, by combining an unusually large and geographically diverse sample set with a multiplexed assay and formal statistical modeling, the work provides a template for future reservoir studies and strengthens the evidence that African Pteropodidae, especially species forming vast communal colonies, constitute a major and ongoing reservoir of flavi- and paramyxoviruses with potential relevance to human health.

Subject of Research: Serological surveillance of RNA virus antibodies in African bats and rodents

Article Title: A multiregional serosurvey of RNA virus-reactive antibodies in bats and rodents reveals the enzootic presence of flavi- and paramyxoviruses in African Pteropodidae

Article References: A multiregional serosurvey of RNA virus-reactive antibodies in bats and rodents reveals the enzootic presence of flavi- and paramyxoviruses in African Pteropodidae. (n.d.). https://doi.org/10.1371/journal.pntd.0013689

Image Credits: AI Generated

DOI: 10.1371/journal.pntd.0013689

Keywords: bats, rodents, serosurvey, flaviviridae, paramyxoviridae, Pteropodidae, Eidolon helvum, Rousettus aegyptiacus, zoonosis, multiplex immunofluorescence, Africa, virus reservoirs

The research, conducted in Foping National Nature Reserve on the southern slopes of the Qinling range, tracked seed production and seed fates across nearly a decade. The team monitored annual seed crops of the three oak species from 2016 to 2021 using seed rain traps suspended beneath the canopies of mature trees, and then ran seed-tagging experiments each autumn to follow what happened to individual acorns after rodents found them. In the springs of 2022 to 2024, they repeated the dispersal experiments to capture the other end of the seasonal cycle, when overwintered seeds face a very different rodent community. Live-trapping surveys showed that the local rodent community was dominated by two species, the Chinese white-bellied rat Niviventer confucianus and the wood mouse Apodemus draco, which together accounted for roughly 80 percent of captures.

The three oaks present rodents with strikingly different packages. Quercus variabilis produces the largest seeds of the trio, averaging about 3 grams fresh weight with a thick pericarp of roughly half a millimeter, relatively high fat content, and the lowest tannin concentration of the three. Quercus glandulifera sits at the opposite extreme: its seeds are small, thin-coated, and loaded with tannins, the bitter defensive compounds that deter many herbivores. Quercus aliena falls in between, though its seeds carry the highest crude protein content. Because rodents must balance the energetic reward of a seed against the time and predator exposure required to open and transport it, these trait differences set the stage for predictable, species-specific foraging decisions.

That predictability showed up clearly in the data. Across almost every autumn of the study, rodents harvested Quercus variabilis seeds fastest, cached them most often, and ate the fewest of them outright. Quercus glandulifera seeds, by contrast, were harvested slowly, consumed in place more frequently, and cached least often. Quercus aliena occupied the middle ground, and although its nutritional profile closely resembled that of Q. glandulifera, rodents still preferred it, apparently on the strength of its larger size. The authors interpret this pattern through the lens of optimal foraging: rodents favor seeds that deliver greater energetic returns per unit of handling time, and thick-shelled seeds are often carried away to safer locations before being opened, because cracking them in the open leaves the animal vulnerable to its own predators.

The study also quantified seed dispersal effectiveness, a framework that combines the quantity of seeds removed with the quality of that dispersal, measured here as the proportion of released seeds that survived the winter after rodent handling. By this measure, Quercus variabilis held a consistent competitive advantage, recording the highest effectiveness in four of the six autumn study years, followed by Q. aliena and then Q. glandulifera. Dispersal distances did not differ significantly among the species, but there was a tendency for the large-seeded Q. variabilis to be carried farther before being eaten or cached, consistent with the optimal caching space model, which predicts that rodents transport higher-value foods to more distant cache sites.

Perhaps the most striking result concerns abundance. The three oaks mast in rough synchrony, producing large seed crops in some years and meager crops in others. Annual seed production varied dramatically: Quercus variabilis peaked at about 21.7 seeds per square meter in 2017 and collapsed to just over one seed per square meter by 2021. When the researchers combined seed crop with rodent availability into a single measure of per capita seed availability, a clear pattern emerged. In years when seeds were abundant relative to the number of rodents, harvest rates slowed markedly—the slowest of the entire study occurred in 2017, the peak mast year. This supports the classic predator satiation hypothesis, which holds that plants overwhelm seed predators by flooding the market, so that a smaller fraction of the crop is consumed.

Yet satiation tells only half the story. In high-availability years, rodents also shifted their behavior after harvesting: a greater proportion of seeds were eaten, both in place and after removal, while a smaller proportion were cached. This aligns with the predator dispersal hypothesis, which proposes that when food is plentiful, rodents have less incentive to invest in long-term storage and instead consume seeds immediately. When seeds were scarce, caching became relatively more attractive as a hedge against future shortage. The authors conclude that the mechanisms underlying both hypotheses can operate at the same time, with satiation governing how quickly seeds are taken and dispersal dynamics governing what rodents do with them once captured.

Seasonality added another layer of complexity. Spring experiments revealed a dramatically different dispersal landscape. Harvest rates were substantially lower than in autumn, and in 2023 the effect was extreme: roughly 15 percent of Quercus variabilis seeds, half of Q. aliena seeds, and 95 percent of Q. glandulifera seeds were still sitting untouched at the release stations fifty days after deployment. The researchers attribute this to reduced rodent abundance in spring following the lean winter months, and to the fact that when all three oak species were simultaneously scarce, rodents switched almost entirely to immediate consumption. No Q. aliena or Q. glandulifera seeds were cached at all in the springs of 2022 or 2023, and overall dispersal effectiveness showed no significant differences among the species in spring, because so few seeds of any kind were cached.

For the oaks, these results carry real evolutionary implications. Quercus variabilis appears to have evolved a winning combination: a large, nutritious seed with enough tannin defense to remain palatable but enough shell to reward caching rather than instant consumption. Quercus glandulifera, with its small, tannin-rich, thin-coated seeds, consistently loses out in the scramble for rodent dispersal services, suggesting it must compensate through other life-history strategies, such as producing seeds in years or microhabitats where competitors are absent, or relying on the simple arithmetic of producing many cheap seeds and accepting high predation. The study’s authors suggest that seed-trait-mediated selection by rodents may modulate the effects of masting itself, shaping indirect seed-seed interactions that ultimately influence how these sympatric species coexist.

The work also underscores how fragile the mutualism between oaks and rodents can be. Scatter-hoarding only translates into forest regeneration when cached seeds are forgotten, and the balance between predation and dispersal tips with every fluctuation in seed crop, rodent population, and season. As climate change alters the frequency and synchrony of mast events across the globe, understanding these trait- and abundance-dependent rules becomes essential for predicting which tree species will regenerate successfully and which will quietly lose their place in the forest. In the Qinling Mountains, at least, the verdict is clear: when it comes to recruiting rodents as gardeners, size, nutrition, and timing are everything.

Subject of Research: Rodent-mediated seed predation and dispersal among sympatric Quercus species in relation to seed traits and mast seeding in the Qinling Mountains, China

Article Title: Trait‐Mediated Seed Predation and Dispersal Are Regulated by Seed Abundance for Sympatric Tree Species in the Qinling Mountains, China

Article References: Wang, J., Han, G., Zhang, B., Han, N., Feng, T., Zhao, J., An, X., Hou, X., & Chang, G. (2026). Trait‐Mediated Seed Predation and Dispersal Are Regulated by Seed Abundance for Sympatric Tree Species in the Qinling Mountains, China. Ecology and Evolution, 16(10), Article e74453. https://doi.org/10.1002/ece3.74453

Image Credits: AI Generated

DOI: 10.1002/ece3.74453

Keywords: seed dispersal, seed predation, rodents, mast seeding, Quercus, Qinling Mountains, seed traits, scatter-hoarding, forest ecology, plant-animal mutualism, seed dispersal effectiveness, China

The research team built their updated checklist on the shoulders of a landmark work: Birds and Mammals of Hainan Island, published in 1983. That volume served as the baseline for virtually all subsequent assessments of the island’s mammal diversity, cataloguing 76 terrestrial mammal species. In the decades since, however, taxonomy has been revolutionized by molecular techniques, museum collections have grown, and field surveys have accumulated a vast body of literature documenting new records and revised species concepts. The researchers systematically synthesized this four-decade archive of published records, museum specimen data, and modern taxonomic frameworks to produce a rigorous, up-to-date inventory of what actually lives on the island.

The result is a checklist documenting 95 terrestrial mammal species, distributed across 9 orders, 26 families, and 63 genera. That total represents 12.91 percent of China’s entire terrestrial mammalian species richness, a remarkable figure for a single island. Compared with the 1983 baseline of 76 species, the new inventory reflects substantial changes in how scientists understand Hainan’s fauna. The team revised the taxonomic status and nomenclature of 40 species, a figure that underscores just how much species concepts have shifted with the advent of integrative taxonomy, which combines genetic, morphological, and ecological evidence to delineate species boundaries more accurately than older, morphology-only approaches.

In addition to these revisions, the researchers added 19 new distribution records for the island, the majority of which involved bats and rodents. These two groups are notoriously difficult to survey and are frequently underrepresented in historical inventories, partly because many bat species are cryptic in the field and several rodent lineages can only be distinguished reliably through genetic analysis. The additions suggest that even for a comparatively well-studied region of China, the true diversity of small mammals may still exceed what is formally documented. At the same time, the team exercised caution: two previously reported species were excluded from the checklist because their distributions fall outside Hainan Island proper or because they lack solid field evidence, a decision that reflects a commitment to verifiable records over inflated species counts.

Beyond simply counting species, the study assessed the conservation status of Hainan’s terrestrial mammals against multiple authoritative reference frameworks, including the IUCN Red List of Threatened Species, the appendices of the Convention on International Trade in Endangered Species (CITES), and China’s national and provincial wildlife inventories. The findings are sobering. Ten species qualify as threatened under IUCN criteria, while 22 species are considered threatened according to the China Red List of Biodiversity. The discrepancy between these two figures highlights how national assessments can capture extinction risk at finer regional scales than global evaluations, which may lag in recognizing the precarious status of geographically restricted populations.

Endemism emerges as one of the island’s most striking features. Seven of the documented species are endemic to China, and six of those occur exclusively on Hainan Island. This concentration of range-restricted species means that the fate of a significant fraction of the island’s mammal diversity rests entirely on the management of a single, relatively small landmass. The most famous of Hainan’s endemic mammals, the Hainan gibbon, has become a global symbol of both extinction risk and conservation hope, but the new checklist makes clear that the island’s smaller, less charismatic mammals face comparable pressures with far less public attention.

The study’s biogeographical analysis confirms a pattern long predicted by island-biogeography theory: Hainan hosts fewer mammal species than the neighboring mainland provinces of Guangdong and Guangxi. Isolation, limited land area, and the dynamics of colonization and extinction all contribute to reduced species richness on islands. Yet the researchers found that Hainan carries a disproportionately high share of critically endangered taxa relative to the mainland. This elevated proportion of imperiled species makes the island’s mammal fauna exceptionally vulnerable to human disturbance and habitat fragmentation, the twin forces that have reshaped tropical Asian landscapes over the past century. When a species’ entire global population is confined to one island, habitat loss there translates directly into global extinction risk.

Compounding the problem is a persistent gap in basic knowledge. Roughly 10 percent of the recorded species remain data-deficient or unevaluated, meaning that scientists lack sufficient information even to assess whether they are threatened. This knowledge gap is particularly pronounced among insectivorous bats and forest-dwelling rodents, groups that are difficult to detect, challenging to identify, and often overlooked by funding priorities that favor larger or more visible animals. For these species, the absence of data is itself a conservation concern, because unassessed populations may be declining unnoticed. The checklist’s authors emphasize that closing this gap is a prerequisite for any credible conservation strategy on the island.

From these findings, the research team lays out a clear agenda for future work. They recommend integrative taxonomic studies that combine molecular and morphological evidence to resolve remaining uncertainties in species boundaries, targeted field surveys aimed at under-sampled habitats and taxa, and long-term biodiversity monitoring programs capable of tracking population trends over time. They further call for strengthened in-situ conservation, which protects species within their natural habitats, and ex-situ conservation measures, such as captive breeding and seed or tissue banks, that provide insurance against catastrophic loss. Finally, they stress that taxonomic and threat assessments must be updated regularly and dynamically, since a static checklist quickly loses its value as new species are described, ranges shift, and threats intensify.

The significance of the new inventory extends well beyond Hainan’s shores. Baseline data of this kind are the foundation of evidence-based conservation planning: without knowing which species occur where, and what condition their populations are in, managers cannot prioritize sites, allocate resources, or measure whether interventions are succeeding. For China’s tropical island province, which has invested heavily in forest protection and in the recovery of flagship species, the checklist provides an essential reference against which future change can be measured. It also serves as a model for other regions where historical inventories, however groundbreaking in their time, have not kept pace with modern taxonomy and accumulated field knowledge. Four decades after the original survey, Hainan’s mammals are finally getting the detailed accounting they deserve, and with it, a stronger scientific basis for survival.

Subject of Research: Updated species inventory and conservation assessment of terrestrial mammals on Hainan Island, China

Article Title: Updated checklist reveals rich, threatened terrestrial mammal diversity on Hainan Island

Article References: Updated checklist reveals rich, threatened terrestrial mammal diversity on Hainan Island. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: Hainan Island, terrestrial mammals, taxonomy, species checklist, endemism, conservation, IUCN Red List, biodiversity monitoring, island biogeography, bats, rodents, habitat fragmentation

Babesia microti belongs to a group of apicomplexan parasites transmitted to animals and humans through the bite of infected hard ticks. In North America, the primary vector is Ixodes scapularis, while Ixodes ricinus serves this role in Europe and Ixodes persulcatus in Asia. Humans are incidental hosts, and human babesiosis has been documented across the United States, Europe and Asia. The parasite primarily infects small rodents, particularly the white-footed mouse, which acts as its principal natural reservoir, although infections have occasionally been reported in domestic animals such as cats and dogs. Because transovarial transmission in ixodid ticks has not been reported, the parasite depends on an enzootic cycle linking ticks and small mammals, with rodents serving as a continuous source of infection for feeding ticks. Beyond tick bites, humans can acquire the parasite through contaminated blood transfusion, organ transplantation and congenital transmission from an infected mother to her foetus.

In most infected people the disease remains asymptomatic, but symptoms typically emerge after an incubation period of one to four weeks and include chills, fever, sweating, fatigue and haemolytic anaemia resulting from the repeated rupture of infected red blood cells. The preferred treatment in humans combines the antiprotozoal drug atovaquone with the antibiotic azithromycin. Rodents are central to the epidemiology of this disease because they are widely distributed, adapt readily to diverse habitats and often live in close proximity to humans. Approximately 200 rodent species are known to harbour more than 60 zoonotic diseases caused by bacteria, viruses and parasites. Pakistan alone hosts 43 documented rodent species, ranging from common mice and rats to porcupines, desert gerbils and giant flying squirrels, yet these animals have rarely been screened for pathogens, with only a handful of reports concerning Toxoplasma gondii and single reports of Hepatozoon and Lankesterella species in local rats and mice.

To address this gap, the research team trapped wild rodents between October 2023 and September 2024 from four districts in Punjab, namely Rajanpur, Dera Ghazi Khan, Multan and Sargodha, and three districts in Khyber Pakhtunkhwa, namely Upper Dir, Mardan and Buner. Using the Thrusfield formula for prevalence studies with an expected prevalence of 10 percent, a 95 percent confidence level and 5 percent precision, they calculated a minimum required sample of 138 animals but nearly doubled this by capturing 284 rodents to improve the reliability of their estimates. Live traps baited with fruit, sweets and biscuits, along with glue traps, were deployed opportunistically at agricultural fields, houses, storage sites and commercial shops. Captured animals were identified to species using standard taxonomic keys, combed for ectoparasites, euthanized under deep isoflurane anaesthesia and sampled by direct cardiac puncture. Blood was collected into tubes containing EDTA anticoagulant, with complete blood counts performed the same day and remaining samples frozen for molecular analysis. All procedures were approved by the ethical review committee of Bahauddin Zakariya University in Multan and conducted in accordance with ARRIVE guidelines.

The trapped animals comprised three species: 137 black rats (Rattus rattus), 80 brown rats (Rattus norvegicus) and 67 house mice (Mus musculus), with males making up 54 percent of the sample. Genomic DNA was extracted from blood using a commercial purification kit and screened by polymerase chain reaction targeting a species-specific region of the parasite’s 18S ribosomal RNA gene, following primers originally described by Persing and colleagues. The assay amplified a 238-base-pair fragment in 35 of the 284 samples, an overall prevalence of 12 percent. Positive controls came from a previously confirmed B. microti-positive dog blood sample from the same laboratory, and distilled water served as the negative control in every run. Representative amplicons from two brown rats, one black rat and one house mouse were confirmed by bidirectional sequencing, submitted to GenBank under accession numbers PQ538588 through PQ538591 and included in phylogenetic analysis.

Prevalence varied modestly among species, with 16 percent of brown rats, 13 percent of black rats and 6 percent of house mice testing positive, though a chi-square comparison found these differences statistically non-significant. District-level patterns were more striking despite lacking statistical significance in binary logistic regression models that used Rajanpur as the reference district. Among brown rats, prevalence peaked at 42 percent in Sargodha; among black rats, at 28 percent in Mardan; and among house mice, at 25 percent in Buner. Notably, every infected house mouse came from Khyber Pakhtunkhwa, while none of the mice from Punjab tested positive, whereas both rat species carried infections in both provinces. Fisher’s exact tests showed that infection was not confined to either sex in any of the three species, and no ticks were detected on any of the trapped rodents, a finding the authors attribute to the temporary nature of tick attachment during blood feeding, seasonal variation in tick activity, host grooming behaviour and the timing of trapping.

Phylogenetic analysis of the partial 18S rRNA sequences, performed in MEGA X using the Maximum Likelihood method with a Kimura 2-parameter model and a discrete gamma distribution, placed all four Pakistani rodent sequences in a single cluster. The sequences showed 100 percent identity with B. microti previously detected in dog and cat blood samples from Pakistan, and 99.49 percent identity with isolates from house mice in Japan and France and from the grey red-backed vole Myodes rufocanus in Russia. They were clearly distinct from 18S rRNA sequences of Babesia leo, Babesia felis, Babesia vulpes and Babesia rodhaini detected in felines and rodents across South Africa, Mozambique, the Czech Republic and Japan, with Cytauxzoon brasiliensis serving as the outgroup. This close relationship between rodent and domestic animal isolates within Pakistan suggests that the same parasite lineage circulates across multiple host species in the country, reinforcing the value of the 18S rRNA gene as a conserved and widely validated marker for sensitive detection, even though its resolution for fine-scale genotypic differentiation remains limited.

The study also documented measurable costs of infection in the rodent hosts. Infected house mice weighed significantly less than uninfected mice, although the observational design prevents any conclusion about causation, since age, nutrition, reproductive condition and concurrent infections could all contribute. In black rats, infection was associated with significantly reduced total white blood cell counts, lymphocyte counts and red blood cell counts. In brown rats, lymphocytes and mean corpuscular volume were significantly decreased while mean corpuscular haemoglobin concentration was significantly elevated. These changes align with the established biology of Babesia infection, in which sporozoites injected by an infected tick invade erythrocytes and undergo asexual replication, with the repeated rupture of infected red blood cells during merozoite release producing haemolytic anaemia. The authors caution that multiple haematological parameters were compared with separate t-tests without adjustment for multiple comparisons, so significant findings should be interpreted carefully and validated in larger samples.

Compared with surveys elsewhere, the Pakistani prevalence of 12 percent sits near the middle of a wide global range, from 0.6 percent in social voles in Turkey and 1.4 percent in Irish wood mice and bank voles to 22 percent among small rodents in Chile, with intermediate figures reported from China, South Korea, Turkey, Lithuania and mainland Southeast Asia. Such variation likely reflects differences in climate, geography, sampling season, host age and immunity, and tick density. The study had limitations: trapping was opportunistic and trap numbers varied by site, potential risk factors such as age, body condition, habitat and season were not evaluated, and the absence of blood smear examination means detection relied entirely on molecular methods, so the reported prevalence reflects molecular detection rather than confirmed active parasitemia and cannot distinguish low-level from heavy infections. No human babesiosis cases have been reported in Pakistan, but limited awareness, inadequate diagnostic facilities and underrecognition of tick-borne diseases, particularly in rural areas, mean undiagnosed infections remain a real possibility. The researchers call for integrated surveillance combining molecular diagnostics with microscopy, investigation of rodent-associated ticks for B. microti and other pathogens, and broader epidemiological studies to evaluate the zoonotic risk that these infected rodents may pose to people and animals across the region.

Subject of Research: First molecular detection and genetic characterization of the tick-borne zoonotic parasite Babesia microti in wild rodents in Pakistan

Article Title: Molecular Detection, Epidemiology and Genetic Diversity of Babesia microti Infecting Wild Rodents

Article References: Munir, H. M., Naeem, M., Ijaz, M., Ullah, S., Usman, M., Nasir, Z. U. R., Khan, A., Almaary, K. S., Bouallegue, A., Mengistie, A. A., & Iqbal, F. (2026). Molecular Detection, Epidemiology and Genetic Diversity of Babesia microti Infecting Wild Rodents. Veterinary Medicine and Science, 12(5), Article e71196. https://doi.org/10.1002/vms3.71196

Image Credits: AI Generated

DOI: 10.1002/vms3.71196

Keywords: Babesia microti, babesiosis, rodents, Pakistan, tick-borne disease, zoonosis, 18S rRNA, phylogenetics, haemolytic anaemia, Rattus norvegicus, Rattus rattus, Mus musculus