Neutralizing Antibodies against the SARS-CoV-2 Ancestral Strain and Omicron BA.1 Subvariant in Dogs and Cats in Mexico.

SARS-CoV-2 mainly affects humans; however, it is important to monitor the infection of companion and wild animals as possible reservoirs of this virus. In this sense, seroprevalence studies in companion animals, such as dogs and cats, provide important information about the epidemiology of SARS-CoV-2. This study aimed to evaluate the seroprevalence of neutralizing antibodies (nAbs) against the ancestral strain and the Omicron BA.

Nematicidal, Acaricidal and Plant Growth-Promoting Activity of Endophytic Strains and Identification of Genes Associated with These Biological Activities in the Genomes.

In the present study, the nematicidal and acaricidal activity of three endophytic strains isolated from nodules was evaluated. The percentages of mortality of NOD4 against was 81.2%, and against 70.

Evolution of highly pathogenic H7N3 avian influenza viruses in Mexico.

Highly pathogenic H7N3 influenza A viruses have persisted in poultry in Mexico since 2012, diversifying into multiple lineages that have spread to three Mexican states, as of 2016. The H7N3 viruses segregate into three distinct clades that are geographically structured. All 2016 viruses are resistant to adamantane antiviral drugs and have an extended 24-nucleotide insertion at the HA cleavage site that was acquired from host 28S ribosomal RNA.

Seroprevalence of spotted fever group rickettsiae in canines along the United States-Mexico border.

Portions of northern Mexico are experiencing a re-emergence of Rocky Mountain spotted fever (RMSF), a tickborne disease caused by Rickettsia rickettsii, a member of the spotted fever group of rickettsiae (SFGR). Infection with R. rickettsii can result in serious and life-threatening illness in people and dogs.