Health Alert: Warrants immediate action or attention. Health Advisory: Provides information for a specific incident or situation; may not require immediate action. Health Update: Provides updated information regarding an incident or situation; unlikely to require immediate action.
August 1, 2016
From: Edward L. Moreno, MD, MPH Kristy Michie, MS
Health Officer 831-755-4585 Epidemiologist 831-755-4503
First Travel-Associated Zika Virus Infection Reported in Monterey County Resident; Local Transmission of Zika Virus Reported in Miami, Florida
Testing may be offered to symptomatic individuals as well as asymptomatic pregnant women who recently traveled to areas with Zika virus transmission or had potential sexual exposure.
On July 30, 2016, Monterey County Health Officials reported the first travel-associated Zika virus infection in a Monterey County resident. The individual traveled to Central America in June and July and developed symptoms upon return to the United States. On July 29, 2016, the Centers for Disease Control and Prevention (CDC) announced that four cases of Zika virus infection in the Miami, Florida, area were likely acquired locally. Zika virus continues to be transmitted in parts of Mexico, Central America, South America and some Pacific islands. To date, there have been 114 travel-associated Zika virus infections among California residents, including 21 pregnant women.
Zika virus is transmitted to people by Aedes mosquitoes, as well as through sexual contact. To date, there has been no local transmission of Zika virus in California. However, the Aedes mosquitoes that carry Zika virus can be found in 12 California counties. Zika virus can be passed from mother to baby during pregnancy. The virus can also be spread by unprotected sexual contact with an infected partner, male or female. Transmission via blood transfusion and laboratory exposure has also been reported nationally.
There have been increased reports of microcephaly, fetal demise, as well as visual and hearing defects among babies born to mothers who were infected with Zika virus while pregnant in impacted areas globally. Most people infected with Zika virus are asymptomatic. If symptoms develop, the most common are fever, rash, arthralgia, headache, and conjunctivitis. Symptoms usually begin 3 to 7 days after exposure and last several days to a week. Treatment is limited to supportive care.