bat mastadenovirus a bat mastadenovirus a bat mastadenovirus a, formerly bat adenovirus tjm, is a species of the genus mastadenovirus of the family adenoviridae. it is a double stranded dna virus with no rna sequence. the designation tjm refers to the strain as there are several species of bat adenoviruses in three groups 1, 2, and 3. bat mastadenovirus a virus classification (unranked): virus realm: varidnaviria kingdom: bamfordvirae phylum: preplasmiviricota class: tectiliviricetes order: rowavirales family: adenoviridae genus: mastadenovirus species: bat mastadenovirus a synonyms bat adenovirus a bat adenovirus 3 (btadv-3) bat adenovirus tjm virology bat mastadenovirus a is most closely related to tree shrew mastadenovirus a and canine mastadenovirus a. its genome consists of 30 putative genes exhibiting wide genetic diversity among bat species and within the same species harboring advs. reservoir bat mastadenovirus a was first isolated from myotis and scotophilus kuhlii bats in beijing, hunan, jiangxi, yunnan, guizhou and hainan provinces in china in 2007 and 2008. transmission transmission between same species is believed to be by droplet respiration and aerosolization of saliva, urine, and feces in closed environments such as caves and other bat roosts. genomic analysis suggests canine adenoviruses may have originated from bites by vespertilionid bats.