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We prevent the spread of disease in San Francisco by investigating cases and outbreaks, promoting vaccination, and planning for infectious disease emergencies.

Learn more about what we do.

2016 National Infant Immunization Week (NIIW) & Toddler Immunization Month (TIM)


National Infant Immunization Week (NIIW) and Toddler Immunization Month (TIM) are annual observances that highlight the importance of routine vaccines for children younger than age two. NIIW is April 16 - April 23, and TIM is celebrated through May 2016. NIIW/TIM is also a great time to acknowledge and thank the immunization champions who help keep California’s children up-to-date on their immunizations.

Coalitions, health departments and stakeholders are encouraged to use NIIW/TIM as a springboard to promote childhood immunizations using local activities, community outreach, media events, and recognition ceremonies.

The California Department of Public Health (CDPH) has developed a wide variety of campaign materials and resources for you to plan, promote, and conduct successful NIIW/TIM activities. Documents are editable and can be customized to meet your needs. For more information, visit the CDPH website.


Zika Virus Information

mosquito on skin

Zika is an infectious disease caused by the Zika virus. It is most commonly transmitted to people by mosquito bites. Symptoms of Zika typically include fever, rash, joint pain, and/or red eyes. Zika is currently circulating in countries in Latin America and the Caribbean, as well as Puerto Rico. It is not circulating in the continental United States. In response to concerns regarding a potential role of Zika virus in causing birth defects, the Centers for Disease Control and Prevention (CDC) has issued a travel alert for people traveling to regions and certain countries where Zika virus transmission is ongoing.

For more information about Zika, visit our Zika Virus Information Webpage.

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Promoting Healthier International Travel


Many travelers head overseas without the protection of effective vaccines or medications to prevent common, debilitating, and life-threatening diseases such as malaria and viral hepatitis. The San Francisco Department of Public Health encourages international travelers to visit a travel medicine specialist prior to departure. 

If your health system does not offer a travel medicine specialist, the AITC Immunization & Travel Clinic is open to the public.




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