Publications by authors named "Javier Caballero-Gomez"

Background: West Nile virus (WNV) is the most widely distributed mosquito-borne flavivirus. Over the past decade, its spread across Europe has raised significant concerns for both public and animal health. Although WNV exposure has been evidenced in various wild mammal species in Spain, no seroepidemiological studies have been conducted on this flavivirus in wild lagomorphs so far.

View Article and Find Full Text PDF

is a vector-borne zoonotic bacterium that causes tularemia, a disease of great importance for animal and public health. Although wild lagomorphs are considered one of the major reservoirs of this bacterium, information about the circulation of in European wild rabbit () and Iberian hare () populations in Europe is still very limited. In Spain, is present in northern central regions, with recurrent outbreaks occurring annually.

View Article and Find Full Text PDF

Evidence of SARS-CoV-2 infections in different animal species raises concerns about the potential for animal reservoirs and transmission to humans. Here, we evaluate the exposure of exotic pet species to this virus throughout the early years of the pandemic (2020 - 2022) in southern Spain. A total of 180 exotic pets (126 domestic rabbits, 31 ferrets, and 23 rodents) were analyzed for antibodies against SARS-CoV-2 using two different ELISAs.

View Article and Find Full Text PDF

Leishmaniosis, caused by phlebotomine sand fly-borne Leishmania spp., is a multi-host and zoonotic disease in tropical, subtropical and temperate climates, worldwide. Leishmania infantum is the only endemic pathogenic species in Europe, and exposure to this protozoan has previously been reported in a wide range of wild mammals, including felids.

View Article and Find Full Text PDF

The European Food Safety Authority has recently listed Q fever as a priority for setting up a coordinated surveillance system. Although Spain is the country with the highest human incidence of the disease in the European Union, updated data on in ruminants are still limited. A total of 780 serum samples from small ruminants and 605 sera from wild ruminants were collected in the Mediterranean ecosystems of southern Spain during the period 2015-2023.

View Article and Find Full Text PDF

Hepatitis E virus (HEV) is an emerging zoonotic virus of public health concern, of which pigs, wild boar and red deer are the main reservoirs. The European Food Safety Authority (EFSA) has recently prioritized the development of monitoring programs of HEV at different stages of the pig food chain, including outdoor pig farming. Pigs managed under these extensive production systems frequently share habitat and natural resources with wild boar and red deer during fattening stages and cross-species transmission of HEV among these species has previously been suggested.

View Article and Find Full Text PDF
Article Synopsis
  • - Clinical cases of bluetongue virus infection and related deaths have been documented in Eurasian lynx.
  • - Iberian lynx populations, both wild and captive, showed frequent exposure to bluetongue virus serotypes 1 and 4 through surveillance.
  • - The exposure to these virus serotypes in the Iberian lynx may result from spillover events occurring from nearby ruminant animals.
View Article and Find Full Text PDF

Coxiella burnetii is a multi-host bacterium of major public and animal health concern. This pathogen circulates among several wild species in the Iberian Peninsula, however, the role of the Iberian lynx (Lynx pardinus) in the epidemiology of this emerging pathogen is still unknown. The objective of this work was to assess the circulation of C.

View Article and Find Full Text PDF

Rat hepatitis E virus (ratHEV) is an emerging cause of acute hepatitis of zoonotic origin. Since seroprevalence studies are scarce, at-risk groups are almost unknown. Because blood-borne infections frequently occur in people with drug use, who are particularly vulnerable to infection due to lack of housing and homelessness, this population constitutes a priority in which ratHEV infection should be evaluated.

View Article and Find Full Text PDF

Crimean-Congo hemorrhagic fever virus (CCHFV) is an emerging tick-borne pathogen in different European countries. Since 2013, clinical and fatality cases associated with CCHFV infection have been reported in humans in Spain. During the last few years, endemic circulation of this virus has been detected in ticks and wild ungulates in this country, but the role of other sympatric wild species in the sylvatic cycle of this multi-host virus remains poorly understood.

View Article and Find Full Text PDF

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), considered a zoonotic agent of wildlife origin, can infect various animal species, including wildlife in free-range and captive environments. Detecting susceptible species and potential reservoirs is crucial for preventing the transmission, spread, genetic evolution, and further emergence of viral variants that are major threats to global health. This study aimed to detect exposure or acute infection by SARS-CoV-2 in 420 animals from 40 different wildlife species, including terrestrial and aquatic mammals, from different regions of Spain during the 2020-2023 coronavirus disease 19 (COVID-19) pandemic.

View Article and Find Full Text PDF
Article Synopsis
  • A study evaluated the presence of hepatitis E virus in various pork products in Spain, focusing on both unprocessed and processed meats.
  • Out of 1265 samples tested, only 5 were positive for the virus, indicating an overall prevalence of 0.4%, with all positive samples coming from unprocessed meat stored at -20 °C.
  • The findings suggest that unprocessed pork, especially from wild boar, poses a potential risk for transmitting this zoonotic virus, while processed products did not test positive, highlighting the need for increased awareness regarding foodborne disease risks.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the exposure of European wild rabbits and Iberian hares to the parasite Sarcoptes scabiei in southern Spain, highlighting a lack of prior detailed research.
  • Researchers collected serum samples from 464 wild rabbits and 132 Iberian hares over several hunting seasons, finding an overall seroprevalence of 15.9%, with higher rates in Iberian hares (31.1%) compared to wild rabbits (11.6%).
  • Identified risk factors for exposure included species type, age (adults), and geographical area, with significant clusters of high seropositivity detected in western and central Andalusia, indicating the need for enhanced monitoring of this parasite in wild populations.
View Article and Find Full Text PDF

We analyzed West Nile Virus (WNV) exposure from 1,222 blood donors during 2017-2018 from an area of south-central Spain. Results revealed WNV seroprevalence of 0.08% (95% CI 0.

View Article and Find Full Text PDF

Circoviruses cause severe disease in pigs and birds. Canine circovirus has thus far only been associated with respiratory and gastrointestinal disorders and systemic disease in dogs. The Iberian lynx (Lynx pardinus) is one of the most endangered carnivores in Europe and the most endangered felid worldwide.

View Article and Find Full Text PDF
Article Synopsis
  • Two out of eleven children diagnosed with acute hepatitis of unknown origin tested positive for rat hepatitis E virus.
  • This finding suggests that rat hepatitis E virus should be included in the possible causes when doctors are evaluating children with unexplained hepatitis.
  • The study highlights the importance of considering lesser-known viruses in the diagnosis of unexplained pediatric liver inflammation.
View Article and Find Full Text PDF

Background: Coxiella burnetii, the causative agent of Q fever, is a zoonotic multi-host vector-borne pathogen of major public health importance. Although the European Food Safety Authority has recently made the monitoring of this bacterium in wildlife a priority, the role of wild lagomorphs in the transmission and maintenance of C. burnetii is poorly understood.

View Article and Find Full Text PDF

We conducted a cross-sectional study in wild boar and extensively managed Iberian pig populations in a hotspot area of Crimean-Congo hemorrhagic fever virus (CCHFV) in Spain. We tested for antibodies against CCHFV by using 2 ELISAs in parallel. We assessed the presence of CCHFV RNA by means of reverse transcription quantitative PCR protocol, which detects all genotypes.

View Article and Find Full Text PDF
Article Synopsis
  • - We found rat hepatitis E virus (HEV) RNA in pigs raised on farms in Spain.
  • - This suggests that pigs could catch rat HEV and potentially transmit it to humans, acting as a link between rodents and people.
  • - Europe needs to check how common rat HEV is in farmed pigs to understand the possible health risks to the public.
View Article and Find Full Text PDF
Article Synopsis
  • In a study of wild and captive Iberian lynxes in Spain, Enterocytozoon bieneusi was found in 3.2% of the animals, but no Encephalitozoon spp. were detected.
  • The research identified four known and one novel genotype of E. bieneusi, suggesting that the Iberian lynx may be a spillover host rather than a primary reservoir, highlighting the need for further studies on its health impact.
View Article and Find Full Text PDF

is an important zoonotic pathogen of worldwide distribution that can infect a wide range of wild and domestic species. The European wild rabbit () can play a role as a reservoir for this bacterium in certain epidemiological scenarios, but, to date, a very limited numbers of large-scale serosurveys have been conducted for this species worldwide. Although exposure in hare species has also been described, in Iberian hare () has never been assessed.

View Article and Find Full Text PDF

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging zoonotic virus of public and animal health concern, of which felids have been suggested as potential reservoirs. Although SARS-CoV-2 exposure has been detected in domestic and wild captive animals belonging to Felidae family, surveillance has not been carried out in free-ranging wild felids so far. The aim of the present study was to assess SARS-CoV-2 exposure in the Iberian lynx (Lynx pardinus), the most endangered felid in the world.

View Article and Find Full Text PDF
Article Synopsis
  • Major non-viral causes of diarrhea in humans and animals include specific protozoan species, but there's a lack of data on these in free-ranging carnivores, especially the endangered Iberian lynx.
  • In a study of Iberian lynxes in Spain, two protozoan species were detected in small percentages of individuals, indicating the presence of both rodent/leporid-adapted and zoonotic variants.
  • The findings highlight the Iberian lynx's role as a host for these parasites, though the risk of human transmission appears low, pointing to the need for further research on the impact of these infections on the species' health.
View Article and Find Full Text PDF

Rat hepatitis E virus (ratHEV; species ) is considered a newly emerging cause of acute hepatitis of zoonotic origin. ratHEV infection of people living with HIV (PLWH) might portend a worse, as with hepatitis E virus (HEV; species ), and consequently this group may constitute a high-risk population. We aimed to evaluate the prevalence of ratHEV by measuring viral RNA and specific IgG antibodies in a large Spanish cohort of PLWH.

View Article and Find Full Text PDF