Melanophoroma in a Lichtenstein's green racer snake.

Melanophoroma is a neoplasm of reptilian pigment cells, considered uncommon and part of a group of neoplasms called chromatophoromas. The objective of this work was to describe a case of melanophoroma in a free-living Lichtenstein's green racer snake (Philodryas olfersii), presenting with an ulcerative nodular neoformation in the integument of the head region. In the neurologic evaluation, a proprioceptive deficit was observed.

Serological investigation of protozoan pathogens (Trypanosoma cruzi, Toxoplasma gondii and Neospora caninum) in opossums from southern Brazil.

South American opossums of the order Didelphimorphia are considered sentinels for zoonotic infections and environmental diseases, such as for Chagas disease caused by Trypanosoma cruzi. Nevertheless, there is a paucity of data regarding protozoan diseases such Toxoplasma gondii and Neospora caninum in Neotropical marsupials; despite these pathogens have been considered threats to some marsupial species. The aim of this study was to determine whether Didelphis albiventris and Philander frenatus opossums from southern Brazil had been previously exposed to T.

Molecular detection and phylogenetic relationship of Haemosporida parasites in free-ranging wild raptors from Brazil.

The order Haemosporida is widely distributed parasitizing members of the Aves class. In birds of prey, infection with Plasmodium spp. parasites varies from an apathogenic form to a clinical syndrome.

Molecular Detection of Human Adenovirus and Rotavirus in Feces of White-Eared Opossums.

The white-eared opossums (Didelphis albiventris) is the largest Brazilian marsupial and a great example of animal synanthropy. Considering the high potential as a carrier of viruses originating from environmental contamination, the presence of Human adenovirus (AdV) and rotavirus was investigated in the feces of rescued white-eared opossums, which were in the process of rehabilitation. The feces of 49 animals were initially investigated by immunochromatography, with three samples positive for AdV and one sample positive for rotavirus.

Serosurvey of West Nile virus (WNV) in free-ranging raptors from Brazil.

West Nile virus (WNV) is a mosquito-borne Flavivirus that can affect birds, horses, and humans, and is the only zoonotic Flavivirus that has been identified in six continents. In Brazil, until 2010, there was no evidence of WNV circulation. Recently, the virus was isolated from a horse with encephalitis, and the first human cases were registered in Brazil.