For the first time in New York City, a baby has been born with microcephaly linked to the Zika virus, the city's Health Department announced today. The birth defect, where a baby's head is smaller than average, can also cause infants to suffer other brain problems, which is the case in this baby, according to DOH. The child has tested positive for Zika virus, and is being monitored along with the mother, who's believed to have contracted the virus in an area with ongoing Zika transmission during her pregnancy.

"The City has been preparing for this scenario for many months now, and we stand ready to help families caring for an infant with microcephaly," Deputy Mayor for Health and Human Services Dr. Herminia Palacio said in a statement. "This case is a sad reminder that Zika can have tragic consequences for pregnant women."

As of July 15th, 2,000 pregnant women in NYC have been tested for Zika, and 41 have gotten positive test results. At the end of May, a baby girl was born in New Jersey with Zika-related birth defects such as microcephaly and low birth weight, but this is the first case of such symptoms that the city's seen.

This news comes just two days after the Health Department announced that despite its public awareness campaign, pregnant New Yorkers have been taking a sort of laissez-faire approach toward avoiding the virus by continuing to travel to Zika-affected regions. In response, the department launched an even more aggressive social media campaign, and urged pregnant women to avoid traveling to areas with active virus transmission.

"We are monitoring the baby's health closely and connecting the family with the necessary services to take care of their child," Health Commissioner Dr. Mary T. Bassett said today. "I remind all pregnant women in New York City, and those trying to get pregnant, that they should delay travel to places where there is active Zika transmission. As we see today, the consequences for the child can be devastating."

New York City does not have active transmission of the virus yet—meaning that Zika-carrying mosquitoes haven't yet infiltrated the city—but 346 New Yorkers have been diagnosed as of July 15th, four of whom received it through sexual transmission.

The CDC has been recommending that males traveling to Zika-affected regions wait eight weeks before having unprotected sex with female partners—and that goes up to six months if they actually have the virus—and should use condoms for the duration of a partner's pregnancy. The city recently extended those guidelines to women with pregnant partners, as they're not sure how the virus behaves in vaginal fluid and were thrown for a loop last week when the first case of female-to-male transmission was found in NYC.