phylogeny

Objective. In 2023–2014, a significant increase in the incidence of pneumonia caused by M. pneumoniae has been reported in Russia and China. Despite being one of the primary causative agents of community-acquired lower respiratory tract infections in children, due to the difficulties in obtaining a culture of this pathogen, the amount of genomic data on M. pneumoniae is currently extremely limited, with fewer than 300 genomic sequences available, of which only 79 are complete.

The species Treponema pallidum includes 4 subspecies. According to the bioinformatic analysis, the syphilis pathogen T. pallidum subsp. pallidum was probably separated from the causative agents of yaws, bejel, and pinta more than 800 years ago. Its …