There are 279 pregnant women in the United States and in U.S. territories who have Zika, health officials announced on Friday. There are 157 women pregnant women with the virus in the continental United States and 122 infected pregnant women in U.S. territories.
The new numbers are from the U.S. Centers for Disease Control and Prevention’s (CDC) Zika pregnancy registry systems in the U.S. and in Puerto Rico. The new numbers include all pregnant women who have had laboratory confirmation of a Zika infection regardless of whether they had symptoms or not.
Until now, the CDC defined and reported cases of Zika as people who had symptoms and a positive test for the virus. Since evidence suggests that pregnant women with Zika but without symptoms can also have babies with microcephaly, the agency will now report all pregnant women with evidence of Zika virus. Most people who get a Zika virus infection do not have symptoms.