Travel advisory in effect for pregnant women because the virus may be linked to birth defects. SUBSCRIBE to ABC NEWS: .br 소두증 유발 바이러스 확산. 법정 감염병 지정 추진 There is rising concern over the fast-spreading Zika virus. Since an outbreak of the disease in Brazil has .br Mosquito-borne virus linked to birth defects; Dr. Marc Siegel weighs in on Americas Newsroombr 소두증 유발 바이러스 확산. 법정 감염병 지정 추진 There is rising concern over the fast－spreading Zika virus. Since an outbreak of the disease in Brazil has .