US officials: The more we know about Zika, the scarier it is

[...] starting with reports from Brazil, over the last year infections in pregnant women have been strongly linked to babies born with unusually small heads, a birth defect called microcephaly that can signal underlying brain damage.

Researchers already were studying whether Guillain-Barre syndrome, a nerve condition that can cause paralysis, is linked to Zika.

[...] Sunday, another Brazilian research team reported two Zika patients who suffered yet another problem, a brain inflammation that damages the coating of nerve cells in a way similar to multiple sclerosis.

The CDC has warned women who are pregnant or attempting to conceive to avoid travel to Zika-affected areas.

Because Zika sometimes spreads through sexual intercourse, the CDC also says men who've traveled to Zika-affected areas either should use condoms with their pregnant partners or avoid sex until the baby's born.