Risk factors for HPV are: - Number of sexual partners. The more sexual partners you have, the more likely you are to contract a genital HPV infection. Having sex with a partner who has had multiple sex partners also increases your risk. - Age. Common warts occur mostly in children. Genital warts occur most often in adolescents and young adults. - Weakened immune systems. People who have weakened immune systems are at greater risk of HPV infections. Immune systems can be weakened by HIV/AIDS or by immune system-suppressing drugs used after organ transplants. - Damaged skin. Areas of skin that have been punctured or opened are more prone to develop common warts. - Personal contact. Touching someone's warts or not wearing protection before contacting surfaces that have been exposed to HPV — such as public showers or swimming pools — might increase your risk of HPV infection. Your test reports suggest that your HPV is negative and that you fall in the low risk category for getting a HPV infection