By Jeb Blount RIO DE JANEIRO (Reuters) – A link between a form of fetal brain damage and the mosquito-born zica virus has been confirmed by Brazilian health authorities on Saturday. The link between zica, first medically identified as a new disease half a century ago, and birth defects has never been made. The virus, endemic in parts Africa, South America, Southeast Asia and some Pacific Islands, has until now been blamed for symptoms such as fever, mild headache, skin rashes, joint pain and conjunctivitis, or “red eye.” Initial analysis shows that the virus can be passed to a fetus and that the fetus is at greatest risk from the virus during the first three months of pregnancy, the statements said.