Publications

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serologic survey for toxoplasma gondii in wild animals in florida.blood samples were collected for serum separation from 114 species of wild animals (25 species of mammals, 82 species of birds, and 7 species of reptiles) in florida. each of the 3,471 samples was tested for antibodies to toxoplasma gondii, using the indirect hemagglutination test. the highest prevalences of t gondii antibodies were 19% in armadillos (dasypus novemcinctus), 18% in raccoons (procyon lotor), 13% in black rats (rattus rattus), and 11% in opossums (didelphis marsupialis). antibody p ...1979521384
the detection of hammondia hammondi in australia and the identification of a free-living intermediate host.a cat fed commercially prepared cat food and free-living rats (rattus rattus and r. norvegicus) passed coccidian oocysts which were morphologically similar to toxoplasma gondii. mice dosed with these oocysts did not develop toxoplasmosis, but instead developed small, thin-walled parasitic cysts containing small bradyzoites in their striated muscles. these cysts measured 35 to 90 micron by 9 to 40 micron and they resembled cysts of hammondia hammondi. unlike t. gondii this coccidian parasite was ...1978735301
a survey of neospora caninum and toxoplasma gondii infection in urban rodents from brazil.abstract toxoplasma gondii is a protozoan parasite that infects humans and other warm blooded animals; it uses feral and domestic cats as the definitive hosts. neospora caninum is a protozoan parasite of animals whose life cycle is very similar to t. gondii, but uses canids as definitive hosts. small rodents play an important role in the life cycle of t. gondii and a few findings indicated that they may be natural intermediate hosts for n. caninum. the present study was aimed at identifying infe ...201121790367
epidemiology of leishmania infantum, toxoplasma gondii, and neospora caninum in rattus rattus in absence of domestic reservoir and definitive hosts.isolated environments are privileged settings to study transmission of infection. montecristo is a small island where no wild or domestic carnivores are present. invasive black rats rattus rattus (n=78) were captured and tested by pcr for leishmania infantum, toxoplasma gondii and neospora caninum. we wanted to test, for these parasites, the existence of a sylvatic cycle independent of reservoir or definitive hosts. none of the rats tested positive by pcr for either t. gondii or n. caninum. we r ...201424295953
serological survey of antibodies to <i>toxoplasma gondii</i> and <i>coxiella burnetii</i> in rodents in north-western african islands (canary islands and cape verde).coxiella burnetii and toxoplasma gondii are intracellular parasites that cause important reproductive disorders in animals and humans worldwide, resulting in high economic losses. the aim of the present study was to analyse the possible role of peridomestic small mammals in the maintenance and transmission of c. burnetii and t. gondii in the north-western african archipelagos of the canary islands and cape verde, where these species are commonly found affecting humans and farm animals. between 2 ...201528235262
serological survey of antibodies to toxoplasma gondii and coxiella burnetii in rodents in north-western african islands (canary islands and cape verde).coxiella burnetii and toxoplasma gondii are intracellular parasites that cause important reproductive disorders in animals and humans worldwide, resulting in high economic losses. the aim of the present study was to analyse the possible role of peridomestic small mammals in the maintenance and transmission of c. burnetii and t. gondii in the north-western african archipelagos of the canary islands and cape verde, where these species are commonly found affecting humans and farm animals. between 2 ...201526244685
seroprevalence of toxoplasma gondii in domestic and wild animals from the fernando de noronha, brazil.abstract fernando de noronha is an archipelago of 21 islands and islets in the atlantic ocean, state of pernambuco, brazil, and has a varied biodiversity, including alien species or sinantropic animals. the objective here was to determine seroprevalence of toxoplasma gondii in domestic and wild animals from fernando de noronha archipelago, brazil. between july 2007 to may 2010, blood samples were collected from 764 animals (533 domestic and 231 wild animals). sera were tested by the indirect f ...201122150091
parasites of the nile rat in rural and urban regions of sudan.in this investigation on endoparasites (helminths) and ectoparasites of the nile rat (arvicanthis niloticus desmarest, 1822), a total of 220 nile rats were trapped from different regions of sudan during the period january 2003-january 2006. examination of different tissues, identification of parasites, effect of these parasites on the organs, the prevalence and intensity of infestation of the parasites and their relation to the habitat of the host, and sex-related infestations were considered. r ...200921392288
isolation and multilocus genotyping of toxoplasma gondii in seronegative rodents in brazil.synanthropic rodents, mainly rats and mice, become ecologically associated with men due to changes in their ecosystems caused by human activities. these animals may take part in the epidemiological cycles of several diseases, including toxoplasmosis. the presence of serum antibodies to toxoplasma gondii in 43 rodents captured in the urban area of umuarama, pr, brazil, was verified by modified agglutination test (mat). brain and heart samples were also collected and bioassayed in mice for the iso ...201020869811
serologic detection of toxoplasma gondii infection in rattus spp collected from three different sites in dasmariñas, cavite, philippines.acute and chronic cases of toxoplasmosis in rattus norvegicus and rattus rattus mindanensis caught in agricultural, commercial and residential sites in dasmariñas, cavite, philippines were determined serologically. fifty-eight percent of r. norvegicus and 42.0% of r. r. mindanensis were positive for anti-t. gondii antibodies (abs). infection was higher in male rats, and those caught in the commercial site had 100.0% seropositivity. thirty percent of the r. norvegicus and 51.0% r. rattus mindanen ...200516438179
toxoplasmosis seroprevalence in urban rodents: a survey in niamey, niger.a serological survey of toxoplasma gondii was conducted on 766 domestic and peridomestic rodents from 46 trapping sites throughout the city of niamey, niger. a low seroprevalence was found over the whole town with only 1.96% of the rodents found seropositive. however, differences between species were important, ranging from less than 2% in truly commensal mastomys natalensis, rattus rattus and mus musculus, while garden-associated arvicanthis niloticus displayed 9.1% of seropositive individuals. ...201323828008
detection of toxoplasma gondii by pcr and mouse bioassay in rodents of ahvaz district, southwestern iran.toxoplasma gondii is obligate coccidian zoonotic parasite. felidae family is definitive and wide ranges of warm-blooded vertebrates are intermediate hosts for the parasite. rodents are measured as an important source of t. gondii infection for the definitive host. thus, this study aimed to investigate toxoplasm infection in rodents of ahvaz district, southwest of iran. a total of 100 rodents (73 rattus norvegicus, 21 rattus rattus, and 6 mus musculus) were collected and studied by gra6pcr and mo ...201424605327
genotyping of toxoplasma gondii from rats (rattus rattus) in riyadh, saudi arabia.toxoplasma 3 main clonal lineages are designated as type i, ii, and iii; however, atypical and mixed genotypes were also reported. this study was conducted for detection of toxoplasma gondii genotypes in rats (rattus rattus) in riyadh region, saudi arabia. pcr test on t. gondii b1 gene was conducted on elisa igm positive samples for confirmation of the infection. however, genetic analysis of the sag2 locus was performed to determine t. gondii genotypes using pcr-rflp technique. pcr test on t. go ...201425031465
cat-rodent toxoplasma gondii type ii-variant circulation and limited genetic diversity on the island of fernando de noronha, brazil.in brazil, studies on animals and humans in mainland areas have shown that most strains of toxoplasma gondii are pathogenic to mice and exhibit great genetic variability.201728468666
seroprevalence of toxoplasma gondii in rodents from various locations in peninsular malaysia.numerous studies have reported the prevalence of toxoplasmosis among malaysians and various domestic animals; but there is paucity of information on its prevalence among rodents which could potentially contribute to the transmission of toxoplasma gondii in both domestic and sylvatic fauna. five hundred twenty-six rodents were captured from six locations in malaysia and identified to species. serum samples were collected from these rodents and tested for t.gondii antibodies using an immunofluores ...201526521512
isolation and genotyping of toxoplasma gondii in seronegative urban rats and presence of antibodies in communicating dogs in brazil.the role of rodents in the epidemiology of toxoplasmosis was investigated in londrina, paraná state, brazil. one hundred and eighty-one rattus rattus and one mus musculus were caught in 37 places. blood and tissues were collected and submitted to the indirect fluorescence antibody test (ifat) and the bioassay. serum samples from 61 contacting dogs were also collected. sixteen rats (8.8%) were positive for toxoplasma gondii, but just two of them were positive by serology and bioassay test. antibo ...201627074322
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