Acute Communicable
Disease Control

Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, #212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856

Call 211 For Information 24/7

Have questions about things like where to go for vaccinations or other health care services?

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Acute Communicable Disease Control
(Back to Zika main page)
About Zika Virus Disease

Healthcare providers contact Los Angeles County Acute Communicable Disease Control for questions or consultation:
213-240-7941 (during business hours)
213-974-1234 (after hours or holidays)

How does Zika spread?
  • Bite of an infected mosquito (most common)
  • From a pregnant woman to her fetus
  • Unprotected sex
  • Blood product transfusion
  • Organ transplantation

What are the symptoms of Zika infection?

Most people infected with Zika will not have symptoms or will have mild symptoms. Symptoms if present can last up to a week. The most common symptoms of Zika are:
  • Fever
  • Rash
  • Headache
  • Joint pain
  • Red eyes
  • Muscle pain

Complications of Zika include Guillain-Barré Syndrome in adults and infant abnormalities if Zika occurs during pregnancy. Guillain-Barré is an immune-mediated disorder of the nervous system. Only a small percentage of people with recent Zika infection have reportedly developed this disorder. Zika has also been associated with other neurological complications including encephalitis, transverse myelitis and polyneuropathy.

Zika infection during pregnancy can cause severe infant birth defects including abnormal brain development which can result in microcephaly or smaller than expected head size. Zika is also linked to other adverse outcomes such as miscarriage and stillbirth.


Protect Yourself and Others
There is no vaccine to prevent Zika. 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. The best way to prevent Zika, and other diseases that spread by mosquitoes, is to protect yourself and your family from mosquito bites while you travel. Also, continue to avoid mosquito bites for at least three weeks after you return to LA County.

Preventing Mosquito Bites
  • Use Environmental Protection Agency (EPA)-registered insect repellents with one of the following active ingredients: DEET, picaridin, IR3535, oil of lemon eucalyptus or para-menthane-diol, or 2-undecanone. See FLYER for more tips.
  • Do not use insect repellents on children younger than 2 months old.
  • Do not use products containing oil of lemon eucalyptus or para-menthane-diol on children younger than 3 years old.
  • When outside, especially when you are in areas with mosquitoes, wear long-sleeved shirts and pants.
  • Stay in places with air conditioning and window and door screens to keep mosquitoes outside.

Plan for Travel
  • Outbreaks of mosquito borne illness are currently occurring in many countries and territories. Check location specific travel recommendations here before you travel.
  • Include a mosquito protection plan both before and after your trip.

Protect Yourself During Sex
Zika can spread through unprotected sex from a person who is infected to his or her partner. Men should use condoms or abstain from sex for 3 months from diagnosis of Zika or travel to an area with active Zika transmission. Women should take sexual precautions for 8 weeks after diagnosis or travel.

Diagnosis of Zika is based on a person’s recent travel history, symptoms, and test results. A blood and/or urine test can confirm a Zika infection.

There is no specific medicine for Zika virus. The only course is to treat the symptoms:
  • Get plenty of rest.
  • Drink fluids to prevent dehydration.
  • Take medicine such as acetaminophen to reduce fever and pain. Do not take aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs).
  • If you are taking medication for another health condition, talk to your healthcare provider before taking additional medication.

See your doctor if you develop symptoms of Zika and have recently traveled to an area with recent transmission of Zika or if you had sex without a condom with a person who lives in or traveled to an area with recent transmission of Zika. Be sure to tell your doctor where you traveled and when you returned. A blood or urine test can confirm a Zika infection. Testing is important if you are pregnant or the partner of a pregnant woman.


Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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