From Fox News:
The number of pregnant women in the United States infected with Zika virus is suddenly tripling, due to a change in how the government is reporting cases.
Previously, officials had reported how many pregnant women had both Zika symptoms and positive blood tests. In a change announced Friday, the Centers for Disease Control and Prevention's count will include all women who tested positive, regardless of symptoms.
Local Zika outbreaks in United States 'likely': US official CDC says it's 'now clear' that Zika virus causes microcephaly Here are the US cities at highest risk for Zika transmission There are now 157 pregnant women infected with Zika in the 50 states, up from the 48 reported last week under the old definition.