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Zika

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

Transmission

Zika virus is spread to people primarily through the bite of an infected Aedes species mosquito. The mosquitoes typically lay eggs in and near standing water in things like buckets, bowls, animal dishes, flower pots, and vases. They are aggressive daytime biters, prefer to bite people, and live indoors and outdoors near people. Mosquitoes become infected when they feed on a person already infected with the virus. Infected mosquitoes can then spread the virus to other people through bites. A mother already infected with Zika virus near the time of delivery can pass on the virus to her newborn around the time of birth. It is possible that Zika virus could be passed from mother to fetus during pregnancy.

Zika is an emerging virus. As of January 2016, there were no reports of infants getting Zika virus through breastfeeding. Because of the benefits of breastfeeding, mothers are encouraged to breastfeed even in areas where Zika virus is found. As of January 2016, there was one report of possible spread of Zika virus through blood transfusion and one report of possible spread through sexual contact.

Symptoms

About 1 in 5 people infected with Zika virus become ill (i.e., develop Zika). The most common symptoms of Zika virus are fever, rash, joint pain, and conjunctivitis (red eyes). Other common symptoms include muscle pain and headache. The illness is usually mild with symptoms lasting for several days to a week. Severe disease requiring hospitalization is uncommon. Deaths are rare. See your healthcare provider if you develop the symptoms and have visited an area where Zika virus is present. If you have recently traveled, tell your healthcare provider when and where.

Treatment

No vaccine or medications are available to prevent or treat Zika infections.

Treat the symptoms:

  • Get plenty of rest.

  • Drink fluids to prevent dehydration.

  • Take medicines, such as acetaminophen or paracetamol, to relieve fever and pain.

  • Aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs), like ibuprofen and naproxen, should be avoided until dengue can be ruled out to reduce the risk of hemorrhage. If you are taking medicine for another medical condition, talk to your healthcare provider before taking additional medication.

If you have Zika virus, avoid mosquito bites for the first week of your illness.

  • During the first week of infection, Zika virus can be found in the blood and passed from an infected person to another mosquito through mosquito bites.

  • An infected mosquito can then spread the virus to other people.

Prevention

DCHHS advises the public to use the 4Ds to help reduce the chance of being bitten by a mosquito.

 

  • DEET All Day, Every Day: Whenever you’re outside, use insect repellents that contain DEET or other EPA approved repellents and follow instructions.

  • DRESS: Wear long, loose, and light-colored clothing outside.

  • DRAIN: Remove all standing water in and around your home.

  • DUSK & DAWN: Limit outdoor activities during dusk and dawn hours when mosquitoes are most active.

 

In addition to the 4Ds, travelers can protect themselves by doing the following:

  • Choose a hotel or lodging with air conditioning or screens on windows or doors.
  • Sleep under a mosquito bed net if you are outside or in a room that is not well-screened.

Downloadable Information

DCHHS Zika Virus Brochure in English

en Español

DCHHS Zika Virus Fact Sheet in Various Languages

 

DCHHS Side-by-Side Comparison of Chikungunya, Dengue and Zika

More information

CDC: Countries and territories with active Zika virus transmission

CDC Interim Travel Guidance 1/26/2016

CDC MMWR Interim Guidelines for the Evaluation and Testing of Infants with Possible Congenital Zika Virus Infections 1/26/2016

CDC Interim Travel Guidance 1/22/2016

CDC Interim Travel Guidance 1/15/2016

* There are currently no reports of locally-acquired Zika virus in Dallas County. Although local spread has yet to be reported in Dallas County, imported cases make local spread possible because the mosquitoes that can transmit the virus are found locally.

For general questions or for more information about Dallas County Health and Human Services,
please email Director Zachary Thompson at: zachary.thompson@dallascounty.org

 

Zachary S. Thompson
Director
Christopher Perkins, D.O., M.P.H.
Medical Director / Health Authority

 

Last Updated: 02/01/2016

 

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