Laís Rizotto

University of São Paulo | USP · Department of Preventive Veterinary Medicine and Animal Health (VPS)

Wild felids are vital to maintaining the ecological balance in natural environments as they regulate prey populations at different levels of the food chain. Changes in the dynamics of predator populations can impact the entire biodiversity of an ecosystem. There are few reports of Adenovirus infections in these animals, and little is known about th...

Wild felids play a crucial role in maintaining the ecological balance within natural environments, which are increasingly affected by anthropogenic activities. Various viruses can infect these animals, and there are only two documented cases of Adenovirus occurrence in wild felids. This study aimed to detect Adenovirus DNA in fecal samples of wild...

This study describes a case report in captive rose-ringed parakeets (Psittacula krameri) that developed clinical signs and eventually died after introducing new birds without quarantine. Bronchopneumonia and airsacculitis with syncytial cells associated with intranuclear inclusion bodies were found.

Bats can harbor a diversity of viruses, such as adenovirus. Ten different species of bat adenoviruses (BtAdV A to J) have been previous described worlwide. In Brazil, BtAdV was described in three species of phyllostomid species: Artibeus lituratus, Desmodus rotundus, and Sturnira lilium. There are around 180 bat species in Brazil, with 67% inhabiti...

Bat coronaviruses (Bat‐CoV) represent around 35% of all virus genomes described in bats. Brazil has one of the highest mammal species diversities, with 181 species of bats described so far. However, few Bat‐CoV surveillance programs were carried out in the country. Thus, our aim was to evaluate the Bat‐CoV diversity in the Atlantic Forest, the seco...

Repeated studies have been shown that isolates of vaccine-derived Newcastle disease virus (NDV) from different species of wild birds and the number of recovered vaccine-derived virus coincident with the most widely vaccine used in the world (B1 and Lasota). Usually, the NDV has been isolated in chicken embryos (CE) as standard method before cell li...

Avian Infectious bronchitis virus (IBV) belongs to Coronavirus genus from Coronaviridae family. IBV can cause a highly contagious acute avian disease, however this infection may be prevent by vaccination. There are several serological methods to determine the level of protection induced by vaccines and to detect IBV infections. Among them, the Hema...

The present study investigated the circulation of avian metapneumovirus (aMPV) in wild birds in Brazil. To do so, 131 samples from 366 oropharyngeal or cloacal swabs collected from 18 species of birds were tested individually or in pools by RT-PCR. Samples detected by RT-PCR were selected for DNA sequencing. Thirteen (9.9%) samples were detected by...

The detection of avian coronaviruses (AvCoV) in wild birds and the emergence of new AvCoV have been increased in the past few years. In the present study, the pathogenicity of three avian coronavirus (AvCoV) isolates was investigated in day-old chicks. One AvCoV isolated from a pigeon, which clustered with the Massachusetts vaccine serotype, and tw...

We report here the complete genome sequence of an avian metapneumovirus (aMPV) isolated from a tracheal tissue sample of a commercial layer flock. The complete genome sequence of aMPV-A/chicken/Brazil-SP/669/2003 was obtained using MiSeq (Illumina, Inc.) sequencing. Phylogenetic analysis of the complete genome classified the isolate as avian metapn...

A Newcastle disease virus (NDV) was isolated in chicken embryonated eggs after detection by real-time reverse transcription-PCR (RRT-PCR) from a captive owl swab. The complete genome sequence of APMV-1/Rhinoptynx clamator/Brazil/22516/2009 (APMV-1, avian paramyxovirus type 1) was obtained using Illumina sequencing. Phylogenetic analysis of the comp...