Confirming the worst fears of many pregnant women in the United States and Latin America, U.S. health officials said there is no longer any doubt the Zika virus causes babies to be born with abnormally small heads and other
severe brain defects.
Not exact matches
The agency said there have been recent variations in the number of cases reported in the region and, while the level of risk is unknown, Zika virus infection during pregnancy causes
severe birth
defects, including microcephaly and other
severe brain abnormalities.
But the Brazilian government is now warning that the virus may be responsible for a dramatic increase in cases of microcephaly, a
severe birth
defect in which the
brain fails to develop properly and the head is much smaller than normal.
Defects in mitochondrial DNA lead to devastating genetic diseases, with such symptoms as
brain abnormalities,
severe fatigue, blindness or defective heart function — and can be fatal.
Zika is the first mosquito - borne virus known to cause
severe birth
defects, most of them
brain - related.
Some of the effects of isotretinoin are consistent with vitamin A toxicity (e.g.
severe birth
defects, possible bone mineral loss with prolonged use), and some suggest vitamin A deficiency, as the isotretinoin may block the more appropriate vitamin A metabolites in the eyes,
brain, and nerves.