![]() ![]() But as many as 80 percent of people infected never develop symptoms. People infected with Zika may have a mild fever, skin rash, conjunctivitis, muscle and joint pain and fatigue that can last for two to seven days. Recent studies have shown evidence of Zika in amniotic fluid, placenta and fetal brain tissue. Suspected ones under investigation had declined to 3,257.īrazil registered 91,387 likely cases of the Zika virus from February until April 2.Ĭurrent research in Brazil indicates the greatest microcephaly risk is associated with infection during the first trimester of pregnancy, but health officials have warned an impact could be seen in later weeks. Conclusive proof of the damage caused by Zika may take months or years.īrazil reports the number of confirmed cases of microcephaly at more than 1,700 as doctors and Brazilian health officials find that some suspected cases of microcephaly are not the disorder. ![]() In addition, the agency said it could cause Guillain-Barre syndrome, a rare neurological disorder that can result in paralysis. The CDC said now that the causal relationship has been established, several important questions must still be answered with studies that could take years.Īccording to the World Health Organization, there is strong scientific consensus that Zika can cause the birth defect microcephaly in babies, a condition defined by unusually small heads that can result in developmental problems. Centers for Disease Control and Prevention concluded that infection with the Zika virus in pregnant women is a cause of the birth defect microcephaly and other severe brain abnormalities in babies. government researchers said they started their first clinical trial of a Zika vaccine. ![]() Companies and scientists are racing to develop a safe and effective vaccine for Zika, but the World Health Organization (WHO) had said early in 2016 that it would take at least 18 months to start large-scale clinical trials of potential preventative shots.Ī vaccine is not expected to be ready for widespread use for at least two or three years. There is no treatment or vaccine for Zika infection. The Pan American Health Organization (PAHO) said Aedes mosquitoes are found in all countries in the Americas except Canada and continental Chile, and the virus will likely reach all countries and territories of the region where Aedes mosquitoes are found. Zika is transmitted to people through the bite of infected female mosquitoes, primarily the Aedes aegypti mosquito, the same type that spreads dengue, chikungunya and yellow fever. The following are some questions and answers about the virus and current outbreak: Material to prevent Zika infection by mosquitoes are displayed at the 69th World Health Assembly at the United Nations European headquarters in Geneva, Switzerland, May 23, 2016. ![]()
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