During 2015-2017, 60 vaginal secretion samples were collected from pregnant women with colpitis (n=40) and normal pregnant women (n=20) in Zhenjiang in China. Samples were resuspended in 10 volumes of
Viral genetic diversity within infected cells or tissues, called viral quasispecies, hasbeen mostly studied for RNA viruses, and is also described with DNA viruses includinghuman papillomavirus type 1
