Fig. 1

Phylogenetic relationships of coronaviruses detected in various animal species in Mexico. The phylogenetic tree was constructed in IQ-TREE using maximum likelihood analysis with 1000 bootstrap replicates, based on nucleotide sequences of the nsp12 gene. Sequences from Alphaletovirus microhylae and Alphapironavirus salmonis, representing the subfamilies Letovirinae and Pitovirinae within the Coronaviridae family, were included as outgroups. Accession numbers for sequences generated in this study are highlighted in magenta. The square brackets and Greek letters α, β, γ, and δ identify and delimit the viral sequences belonging to each of the genera within the Orthocoronavirinae subfamily