CDC updates Zika recommendations for sex and pregnancy

(CNN) — Women with confirmed cases of the Zika virus or who have had symptoms of the virus should wait at least eight weeks after the start of their symptoms before trying to get pregnant, the U.S. Centers for Disease Control and Prevention said Friday.

Men with confirmed cases of the virus or who have had symptoms of the virus are now advised to wait at least six months after their symptoms begin before having unprotected sex.

These timelines update previous guidelines, based on new information learned about how long the virus stays in semen, Dr. Denise Jamieson of the CDC told reporters. They also address new concerns about when women become pregnant, whereas previous guidelines focused on women who were already pregnant.

“We considered the longest-known risk period for these categories. We then allowed for three times the known period of time,” Jamieson said.

The CDC issued other guidelines:
— Women and men without symptoms who have traveled to or had sex with someone who has traveled to a Zika-infected area are now advised to wait at least eight weeks after possible exposure to the virus before the woman tries to become pregnant, according to the guidelines.
— Men who have traveled to a Zika-infected area who have not had symptoms of the virus are now advised to abstain from sex or use a condom for at least eight weeks after returning from the area.
— Men who live in a Zika-infected area should use condoms or abstain from sex as long as the Zika virus is circulating there.
— Women and men who do not have the virus but who live in areas where the virus is being transmitted are now advised to talk with their health care providers about plans for pregnancy during the ongoing outbreak.

Acknowledging that the decision to have a baby is both personal and complex, CDC Director Dr. Tom Frieden told CNN, “We are not going the way of saying don’t have children” — a step some other countries including Brazil and Jamaica have taken.

Jamieson said there are many risks associated with pregnancy and Zika is one more risk to consider, referring to the link between the virus and fetal abnormalities in some babies whose mothers had the virus during pregnancy.

The exact risk of Zika-related complications to babies is still unknown and the subject of ongoing research.

The new timelines factor in new information that the virus can remain in semen for as long as two months, Jamieson said. They extend that to consider the longest possible risk period, she said.

The guidelines apply to sexual intercourse, as well as oral and anal sex.

The Zika virus, transmitted by the aggressive Aedes aegypti mosquito, has spread to at least 34 countries and territories. The World Health Organization estimates 3 to 4 million people across the Americas will be infected in the next year.

The CDC has warned pregnant women against travel to those areas. Health officials in several of those countries are telling women to avoid pregnancy — in some cases for as long as two years.

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