
Gregg Zoroya and Liz Szabo, USA TODAY
At least 11 U.S. troops have been infected with the Zika virus since January, nearly all of whom traveled to countries where the mosquito-born illness is prevalent, a Pentagon health report published Friday disclosed.
In addition, four dependents of servicemembers — which can include spouses and children — and two military retirees contracted the illness, according to the report. It underscored the risks to military personnel of child-bearing age exposed to the virus during deployments.
A fetus infected with the Zika virus during the first three months of pregnancy has about a 1% to 13% chance of developing microcephaly, an abnormally small head usually caused by incomplete brain development, according to the Centers for Disease Control and Prevention.