NEW YORK (AP) - 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 counting 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 will count all women who tested positive - regardless of symptoms.
Pregnant women in US with Zika spikes on new counting method
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