
Reuters
April 25, 2016
April 25 (Reuters) – – Global health officials are racing to better understand the Zika virus behind a major outbreak that began in Brazil last year and has spread to many countries in the Americas.
The following are some questions and answers about the virus and current outbreak:
How do people become infected?
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 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.
How do you treat Zika?
There is no treatment or vaccine for Zika infection. Companies and scientists are racing to develop a safe and effective vaccine for Zika, but the World Health Organization (WHO) had said it would take at least 18 months to start large-scale clinical trials of potential preventative shots.
How dangerous is it?
The U.S. 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. The CDC said now that the causal relationship has been established, several important questions must still be answered with studies that could take years.
According 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. In addition, the agency said it could cause Guillain-Barre syndrome, a rare neurological disorder that can result in paralysis. Conclusive proof of the damage caused by Zika may take months or years.
Brazil has confirmed 1,113 cases of microcephaly, and considers most of them to be related to Zika infections in the mothers. Brazil is investigating an additional 3,836 suspected cases of microcephaly. Colombia has confirmed two cases of microcephaly linked to Zika.
https://ca.news.yahoo.com/why-zika-virus-causing-alarm-214755334.html