There are more than 40 types of the human papillomavirus . There are more than 40 types , according to the Centers for Disease Control and Prevention , and approximately 79 million Americans are currently infected . HPV can cause genital warts and several types of cancer , including throat cancers . The virus is spread through sexual contact with an infected partner or by sharing needles used to inject drugs such as heroin or cocaine.
There are more than 40 types of the human papillomavirus . HPV can cause genital warts and several types of cancer , including throat cancers . The virus is spread through sexual contact with an infected partner or by sharing needles used to inject drugs such as heroin or cocaine.