Zika

Updated: September 11, 2017

8/2/17 – The California Department of Public Health released Updated Guidance for Health Care Providers Caring for Pregnant Women with Possible Zika Virus Exposure. This guidance differs from CDC’s 7/28/17 guidance update, which extends discretion to states where regional epidemiology and travel patterns may deviate from patterns seen in other parts of the country. The Alameda County Public Health Department is adopting the new CDPH guidance.

Currently, there is no mosquito-borne spread of Zika virus in Alameda County, and all cases that have been reported have been travel-associated Zika or spread sexually. For the total number of cases in California by county visit: CDPH Case Numbers for Zika Virus in CA; these numbers are updated weekly. CDPH has declared Alameda County at "extremely low risk" for mosquito-borne Zika transmission.

In order to avoid infection with Zika virus, the Alameda County Public Health Department advises pregnant women, those considering pregnancy, and their partners to avoid travel to areas with Zika virus transmission. Several travel advisories have been issued, and Zika risk areas have been identified in parts of Mexico, Latin America, South America, and the Caribbean; Southern Asia, Southeast Asia, and the Pacific Islands; as well as sub-Saharan Africa. The CDC has lifted their recommendation to avoid travel to Miami-Dade County, Florida (as of 6/2/17) and Brownsville, Texas (as of 8/29/17). However, testing may still be indicated for some patients whose exposure occurred prior to or even after these travel recommendations were lifted. See the Testing and Diagnosis sections of the CDC’s Advice for people living in or traveling to South Florida and Brownsville, Texas.

Mosquito bites can be prevented by wearing long sleeved shirts and long pants, using insect repellant, and emptying standing water. Also, there are specific safe sex practices recommended after travel to areas with active Zika transmission. After return from travel, female travelers should wait at least 8 weeks before having unprotected sex or to attempt conception. Male travelers should wait at least 6 months before having unprotected sex.

Alameda County Public Health Department (ACPHD) Response

Staff from the ACPHD Division of Communicable Disease Control & Prevention (DCDCP) continues to coordinate incoming and outgoing Zika testing requests and submissions, situation updates, communications, guidance, preparedness, surveillance, and prevention relevant to Zika Virus infection. DCDCP is working in collaboration with the California Department of Public Health (CDPH); Centers for Disease Control and Prevention (CDC); regional Bay Area health departments; local hospitals; healthcare providers, and others. Guidance, information and knowledge about the clinical impact of Zika virus, and how to submit specimen requests to CDC and CDPH has been changing rapidly and will continue to be monitored by DCDCP in order to keep Alameda County health care providers and the public informed.

ACPHD is also coordinating closely with Alameda County Mosquito Abatement and with Alameda County Environmental Health Vector Control, and the CDPH to ensure information, surveillance, and prevention messages for mosquito-borne diseases (including West Nile, Chikungunya virus, and Dengue Virus) are shared appropriately with the public.

For more Zika information, visit our resources page.

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