Is this new? I thought the only danger from Zika was with pregnancy.
See post #14
The most worst known side effect is on the fetus, if infected during pregnancy, is microcephaly, nervous system problems.
Not enough is yet known about Zika, and more is learned each day, including its ability to mutate.
Personally, although I am not a virologist, I believe that Brazilian is a localized variant, which mutated due to insecticides, herbicides, and other environmental influences,
since previously, the only known side effect was a rash to 30% of those ( male and female) who got infected.
See also post #15 (hotlink) for thought provoking issues, as there remains some serious questions regarding environmental contributing issues.
More serious and questioning science is needed to determine 'cause and effect'.