Contact Information
Los Angeles County
Department of Public Health
Immunization Program
3530 Wilshire Blvd. Suite 700
Los Angeles, CA 90010
Phone: (213) 351-7800
Fax: (213) 351-2780

Perinatal Hepatitis B Prevention Unit
Phone: (213) 351-7400
Fax: (213) 351-2781

Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States. Studies showed a consistent association between HPV and cervical cancer in the 1990s. HPV is transmitted by direct contact, usually sexual, with an infected person. Transmission occurs frequently with sexual intercourse but can occur following non-penetrative sexual activity. Most of the time, HPV has no symptoms so people do not know they have it. In addition to cervical cancer, the virus causes anal and penile cancer, and genital warts.

Protection against HPV can be prevented through vaccination. Currently there are two vaccines that are licensed in the United States; HPV4 (Gardasil) and HPV2 (Cervarix). Both vaccines are recommended for females starting at 11 years but can be given through 26 years of age. HPV4 vaccine is recommended for males starting at age 11 years but it can be given through 21 years of age (26 years if high risk for HPV). HPV2 is not approved for males. With both vaccines, more than 99% of recipients develop an antibody response to HPV types included in the respective vaccines 1 month after completing the 3 dose series. 

Ideally, vaccines should be administered before potential exposure to HPV through sexual contact; however, females who may already have been exposed to HPV should be vaccinated if in recommended age groups. Both HPV vaccines require 3 doses to complete the series. The second and third doses should be administered 2 and 6 months after the first dose. There should be at least 24 weeks between the first and the third HPV doses.

Information and Resources for Families Information and Resources for Providers
Reporting Guidelines and Resources Alerts, Updates, and Reports

Report cases to the Los Angeles County Department of Public Health 

Business Hours: 
Phone: (888) 397-3993 Fax: (888) 397-3778 

After Business Hours 
Phone: (213) 974-1234

Laboratory Testing Guidelines For
Measles and Mumps
It's Flu Season
Immunization Skills Institute
Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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