The
U.S. Centers for Disease Control and Prevention said on Thursday that it is
monitoring 320 U.S. pregnant women with laboratory evidence of Zika virus
infection, up from 287 women a week earlier.
However,
the number of babies born in the United States with birth defects linked to
Zika infection in mothers during pregnancy, or lost pregnancies linked to the
virus, remained unchanged from last week's report at 7 and 5, respectively,
according to a CDC registry created last month.
The
registry compiles poor outcomes of pregnancies with laboratory evidence of
possible Zika virus infection in the 50 states and the District of Columbia.
Zika
has caused concern throughout America due to an alarming rise in cases of the
birth defect microcephaly and other severe fetal brain abnormalities linked to
the mosquito-borne virus reported in Brazil, the country hardest hit by the
outbreak. Infants with microcephaly are born with abnormally small heads and
may experience potentially disabling developmental problems.
Brazil
has confirmed more than 1,600 cases of microcephaly linked to Zika.
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