HPV, or human papillomavirus, is a group of more than 200 related viruses. Some types of HPV can cause warts, while others are linked to various cancers, including cervical, anal, and throat cancers. It is one of the most common sexually transmitted infections, often spreading through intimate skin-to-skin contact. Most people with HPV do not experience any symptoms and may not know they are infected. In many cases, the immune system clears the virus naturally over time. Vaccines are available to protect against the most harmful types of HPV, helping to reduce the risk of related health issues.