>> Men and women returning from countries with the Zika virus should practice safe sex or abstinence for at least six months. That's according to new, tougher guidelines from the World Health Organization. The advice applies even if people aren't trying to conceive, and have no symptoms. Previous guidelines refered only to men for a period of eight weeks.
The WHO says the update's based on new evidence of transmission, in which shows that Zika stays in semen for longer than was thought. Zika infections in pregnant women can cause microcephaly. A severe birth defect, where the head and brain are under sized. In adults, Zika infections have also been linked to a rare neurological syndrome.
e WHO says pregnant women should not travel to areas with Zika, and warned those heading to the Paralympic Games starting on Wednesday in Rio, to take precautions against mosquito bites. They say the risk for travelers and athletes is low, but not zero.