NIH begins large study of pregnant women in Zika-hit areas
WASHINGTON – Researchers are beginning a study of up to 10,000 pregnant women in Puerto Rico, Brazil and other Zika-hit parts of Latin America and the Caribbean, to better understand the virus’ threat.
The U.S. National Institutes of Health announced the study Tuesday, saying researchers will enrol participants starting in the first trimester and compare the birth outcomes of those who become infected with Zika and those who don’t.
Zika, spread mainly by mosquitoes, causes only mild symptoms in most people. But during pregnancy, it can cause fetal death and severe birth defects.
The Zika in Infants and Pregnancy study will track a variety of birth defects, how risk may vary by trimester — and if there are additional risk factors, such as prior infection with the also-common dengue virus.
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