Final answer:
Human papillomavirus (HPV) is primarily transmitted through sexual contact, but there can be alternate probable transmission mechanisms such as childbirth and contaminated objects. These nonsexual modes of transmission are less common but can still contribute to the spread of HPV.
Step-by-step explanation:
Human papillomavirus (HPV) is primarily transmitted through sexual contact, including vaginal and oral sex. However, in addition to sexual transmission, there can be alternate probable transmission mechanisms for HPV.
In rare cases, HPV can be transmitted through nonsexual contact, such as during childbirth if the mother has an active HPV infection. It is also possible for HPV to be transmitted through contaminated objects, such as sharing sex toys that have not been properly cleaned or through finger-to-genital contact. These alternate transmission mechanisms are less common than sexual transmission but can still contribute to the spread of HPV.