Updated Wednesday, 10:04 a.m. - The Centers for Disease Control and Prevention confirmed to CNN that a case of Zika virus in an individual who had not traveled abroad was acquired through sexual activity. The case was originally announced by Dallas County Health and Human Services in Dallas, Texas, but had not been confirmed by CDC.

In a statement to CNN, the CDC said it would soon provide new guidelines for preventing Zika virus that focus on male sexual partners of women who could become pregnant. There is no threat to a fetus in the Texas case, the CDC said.

Dallas County Health and Human Services said it received confirmation that a Texas resident contracted the virus after having sexual contact with a person who returned from a country where Zika was present. There are currently six confirmed Zika cases in Texas.

>>Related: How to prevent the Zika virus

The virus, which one World Health Organization official said was spreading at an "explosive" rate, has been confirmed in several states since the outbreak of the illness. All previous cases in the U.S. were travelers returning to the U.S. from countries where the virus was present.

>> Read more trending stories

People have been known to contract Zika after being bitten by an infected Aedes mosquito.

Details about the infected woman have not been released, but she is not pregnant, according to The Dallas Morning News. Most fears about Zika focused on the effects that women can pass on to their children if infected while pregnant.

>>Related: CDC warns pregnant women not to travel to these countries