WHO issues tougher safe sex guidance for those who visited Zika zones

People who travel to regions affected by the Zika virus outbreak should practise safe sex for at least half a year upon their return, health leaders have said. Stein said some researchers published brain scans of Brazilian babies that contracted the virus through their mothers who had Zika while pregnant.

The new recommendations apply to both men and women, and should be followed even if neither of the partners have shown symptoms of Zika and regardless of whether they are trying to conceive or not.

The CDC urges men who have had symptoms of Zika infection to practice safe sex or abstinence for six months to prevent sexual transmission of the virus.

DOH said that Zika virus is primarily transmitted through the bite of Aedes mosquito.

World Health Organization advises that pregnant women should not travel to areas with ongoing Zika virus transmission, and it warned people travelling to the Paralympic Games, which starts on Wednesday in Rio de Janeiro, to take precautions against mosquito bites.

Americans are most trusting of Zika information from the Centers for Disease Control and Prevention, their personal doctor, and their state or local public health departments, but few have received information from these sources.

Five other cases of Zika infection had been detected since then, with four foreigners acquiring the infection from overseas, meaning it was "imported", according to Bayugo.

The important question of whether Zika found in the human eye is infectious, through tears or any other medium, needs to be determined through further study. It's also found in urine, but there's no evidence people can pass it to one another that way.

The study, published September 6, describes the effect of Zika virus infection on the eyes of mouse fetuses, newborns and adults and raises the possibility that the eye can function as a reservoir for Zika.

The study looked at the speed at which Zika is being spread in the hope that a breakthrough in stopping the disease.

Researchers infected adult mice with Zika and found the virus in the eyes several days later.

NPR health correspondent, Rob Stein, said the Zika virus can cause serious and devastating damage.

The researchers said their findings raise the possibility that Zika could be spread through contact with the tears of infected people, but said that would have to be proven.

It's hard to tell when and how people are infected by a virus when it's spread by mosquitoes, as people living in close quarters not only touch one another but would be vulnerable to bites from the same insects.

Zika has caused chaos in South America and many women have given birth to babies with severe cranial deformities.

Therefore, Ubial said that this case was most likely due to local transmission.

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