HPV infection is caused by a virus.
More than 100
types of HPV have been found. Some types cause
genital warts and some can lead to
cervical cancer. Types 6 and 11 cause most genital
warts. Other types such as 16 and 18 are high-risk and can cause abnormal cell
changes on the cervix.
How the infection is spread (transmission)
spread by direct contact.
The virus can be spread to or from the
genitals, anus, mouth, or throat during sexual activities. But warts in the
mouth or throat are extremely rare. Condoms can lower your risk of getting
After the infection occurs, it may spread to other areas of
the genitals or to the anal area.
You can spread the virus even if
you do not have any symptoms of infection or any visible warts.
There is a small chance that a pregnant woman can pass the
virus to her baby.
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
August 05, 2013
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this