Detection and Phylogenetic Analysis of Emerging Human-Associated Gemykibivirus-2 in Molossus molossus Bat From Brazil.

We detected an emerging human-associated gemykibivirus-2 (HuGkV-2) in rectal swab sample from Molossus molossus bat from Brazil. Phylogenetic analysis further revealed well-supported relationships between our sequence and those associated with human infections. This study underscores the necessity of ongoing monitoring of HuGkV-2 to elucidate potential spillback events, its role in human infections, and its public health implications.

Molecular Phylogeny of Cryptonanus (Didelphidae: Thylamyini): Evidence for a recent and complex diversification in South American open biomes.

Systematic revisions of South American marsupials have contributed to our knowledge about genus and species diversity in the last decades, including studies of the most recently described genus Cryptonanus (Didelphidae), currently comprising four recognized species. Herein we provide the first phylogeny for these mouse opossums based on comprehensive sampling, including representatives from all nominal taxa, encompassing most of the geographic distribution of the genus while also extending its known range. The taxonomic status of Cryptonanus species was explored by analyses of multiple mitochondrial and nuclear DNA markers to assess phylogenetic relationships and to provide divergence time estimates, species delimitations and biogeographical hypotheses.