Zika Virus Information

 (Aedes Mosquito)

Zika Virus Basics:

Zika virus is a virus spread to people through mosquito bites of Aedes species mosquitoes; sexual transmission of Zika virus is also known to occur.  Aedes mosquitoes also spread dengue and chikungunya viruses.  Outbreaks of Zika virus disease have occurred in Africa, Southeast Asia, and the Pacific Islands.  Zika virus is not currently being spread by mosquitoes in the continental United States.

The most common symptoms of Zika virus disease are fever, rash, joint pain, and conjunctivitis (red eyes). The illness is usually mild with symptoms lasting from several days to a week. Severe disease requiring hospitalization is uncommon.

In May 2015, Zika virus was identified in Brazil and has resulted in a large outbreak in that country. There have been reports in Brazil of pregnant women with poor pregnancy outcomes, including giving birth to babies with a condition called microcephaly.  Microcephaly is a birth defect where a baby’s head is smaller than expected when compared to babies of the same sex and age. In response, CDC has issued a travel alert (Level 2-Practice Enhanced Precautions) for people traveling to regions and certain countries where Zika virus transmission is ongoing.  There have also been reports of a potential association between Zika virus infection and Guillain-Barre syndrome, a neurological disease that can affect children and adults.

Limited Zika virus transmission has been reported in certain areas of the United States; however, no transmission has been identified in Maryland at this time.  All Zika virus infections detected in Maryland have been associated with travel to countries with ongoing Zika transmission.

DHMH Zika Videos


Maryland Confirmed Zika Virus Infections  (As of August 17, 2016) 

Travel-Associated Locally Acquired Vector-Borne Total
64 0 64

Information for Pregnant Women

Countries with Zika Virus Transmission

Si usted desea más información sobre el virus del Zika en español, haga un clic aquí:

Information for Clinicians

   DHMH Clinician Guidance

   CDC Clinician Guidance

Important Links:

Reporting and Lab Testing Guidance


CDC Information on Zika​