Abstract
Several novel adenoviruses (AdVs) have recently been identified in humans and other animal species. In this study, we report the molecular detection of and phylogenetically characterize bat and human AdVs detected in fecal or rectal swab samples collected in southern China. To detect AdVs, a 252–261 bp fragment of the DNA polymerase (DPOL) gene was amplified using nested PCR. A total of 520 rectal swab samples were collected from eight bat species in four geographic regions of southern China (Guangzhou, Yunfu, Huizhou, and Haikou city). Thirty-six (6.9%) samples from the following species tested positive for AdVs: Myotis ricketti, Miniopterus schreibersii, Scotophilus kuhlii, Taphozous melanopogon, Rhinolophus blythi, and Cynopterus sphinx. Eight novel AdVs were detected in 13.3% of the samples from C. sphinx. Of 328 fecal samples from patients with diarrhea, 16 (4.9%) were positive for classical human AdVs. Phylogenetic analysis showed that human AdVs shared low similarity (57.1–69.3%) with bat AdVs in deduced amino acid sequences of the AdV DPOL region. Thus, our study indicated that bat AdVs and human AdVs are species specific. As such, there is no evidence of cross-species transmission of AdV between bats and humans based on current data.
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