Date Sent: 08/22/2016 08:35 AM EDT
Sender: Michigan Health Alert Network
Subject: CDC HAN: CDC Expands Guidance for Zika Virus Transmission in Miami-Dade, Florida
CDC has previously issued travel, testing, and other guidance for local mosquito-borne Zika virus transmission (active Zika virus transmission) for a one-square-mile area in the Wynwood area of Miami that the Florida Department of Health (FL DOH) identified. The guidance for those who live in or traveled to this area any time after June 15, 2016, remains in effect.
FL DOH continues to investigate active Zika virus transmission in South Florida. Investigation has revealed a new area of active transmission in a 1.5-square-mile section of Miami Beach. In addition, FL DOH has identified multiple other individual instances of mosquito-borne Zika virus infection and an increase in travel-related cases.
Because the incubation period for Zika infection is up to two weeks, a high proportion of infected people have no symptoms, and the diagnosis and investigation of cases takes several weeks, coupled with these individual instances of mosquito-borne Zika virus infection and increase in travel-related cases, it is possible that other neighborhoods in Miami-Dade County have active Zika virus transmission that is not yet apparent.
For the identified area of active transmission in Miami Beach, CDC advises that the recommendations outlined below be followed. Based on the earliest time of symptom onset and a maximal two-week incubation period for Zika virus, this guidance applies to pregnant women, women of reproductive age, and their partners who live in or traveled to Miami Beach after July 14, 2016.
For all other areas of Miami-Dade County, while further investigations are underway, CDC advises strict adherence to precautions to prevent mosquito bites. Consistent with the August 3 recommendation of the Florida Governor, pregnant women in these areas should be assessed for potential exposure to Zika virus and, when indicated, obtain laboratory testing. Pregnant women and partners of pregnant women who are concerned about potential Zika virus exposure may also consider postponing nonessential travel to all parts of Miami-Dade County.
This is an ongoing investigation, and FL DOH and CDC are working together to rapidly learn more about the extent of active Zika virus transmission in Miami-Dade County. CDC will update these recommendations as more information becomes available.