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What is the Zika virus?
The Zika Virus is a tropical infection that is relatively new to the Western Hemisphere.
Zika virus spreads to people primarily through the bite of an infected Aedes species mosquito (Ae. aegypti and Ae. albopictus). People can also get Zika through sexual intercourse with a male or female partner infected with Zika and it can be spread from a pregnant woman to her fetus. People can protect themselves from mosquito bites and during sexual intercourse to prevent Zika. This fact sheet explains who's most affected and why, symptoms and treatment, and how to protect against Zika.
Where has Zika been confirmed?
As of November 2, 2016, The California Department of Public Health reports the following confirmed cases of the Zika virus in California all from traveling outside the US:
Aedes aegypti Surveillance
Central Valley Mosquito Control District Boundaries
What are the Zika symptoms?
Many people infected with Zika won't have symptoms or will only have mild symptoms. The most common symptoms are:
- Joint pain
- Or Red eyes
Other common symptoms include muscle pain and headache. Symptoms can last for several days to a week. People usually don't get sick enough to go to the hospital, and they very rarely die of Zika. Once a person has been infected with Zika, they are likely to be protected from future infections.
How does Zika spread?
The mosquitoes that carry Zika are aggressive daytime biters, but they can also bite at night. A mosquito becomes infected when it bites a person already infected with Zika. That mosquito can then spread the virus by biting more people.
Zika virus can also spread:
During sex with a man or woman infected with Zika.
From a pregnant woman to her fetus during pregnancy or around the time of birth.
Through blood transfusion (likely but not confirmed).
Is there a Zika vaccine?
There is no specific medicine to treat Zika.
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.
- If you are taking medicine for another medical condition, talk to your healthcare provider before taking additional medication.
To help prevent others from getting sick, strictly follow steps to prevent mosquito bites during the first week of illness.
What should I do?
There is no vaccine to prevent Zika. The best way to prevent diseases spread by mosquitoes is to protect yourself and your family from mosquito bites. Here's how:
- Wear long-sleeved shirts and long pants.
- Stay in places with air conditioning and window and door screens to keep mosquitoes outside
- Take steps to control mosquitoes inside and outside your home.
- Treat your clothing and gear with permethrin or buy pre-treated items.
- Use Environmental Protection Agency (EPA)-registered insect repellents. Always follow the product label instructions.
- When used as directed, these insect repellents are proven safe and effective even for pregnant and breastfeeding women.
- Do not use insect repellents on babies 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.
- Mosquito netting can be used to cover babies younger than 2 months old in carriers, strollers, or cribs to protect them from mosquito bites.
- Sleep under a mosquito bed net if air conditioned or screened rooms are not available or if sleeping outdoors.
- Prevent sexual transmission of Zika by using condoms or not having sex.
Sources for information and images:
CDC Centers for Disease Control and Prevention
The County of Fresno
Fresno Mosquito and Vector Control District
Consolidated Mosquito Abatement District
Kings Mosquito Abatement District
Central California Blood Center
California Department of Public Health