root › Viruses › Monodnaviria › Shotokuvirae › Cossaviricota › Papovaviricetes › Zurhausenvirales › unclassified Zurhausenvirales › Papillomaviridae › Firstpapillomavirinae › Alphapapillomavirus › Alphapapillomavirus 7 › human papillomavirus 18