<prompt> Genital was are most commonly caused by which of the following serotypes of IHPV?HPV 6HPV 16HPV 18HPV 33  <response>: WAS:- Caused by human papilloma virus. Anogenital was caused by HPV 6,11,16,18,31,33. Out Of these 6 is mostly involved. These virus invade squamous epithelium and trigger cell proliferation. Viruses mainly being transmitted by fomites ,scratching, and auto inoculation. Reference: IADVL textbook of dermatology, vishalakshi Vishwanath pg no.67. 