Mosquitoes transmit dangerous diseases including: Zika, Chikungunya, dengue, West Nile, and yellow fever viruses, and malaria. Mosquitoes that transmit zika virus are found in many countries in South America and the West Indies. Recently a mosquito colony transmitting Zika virus was found close to Miami. The symptoms of Zika are fever, rash, joint pain, and conjunctivitis. Normally the symptoms are not severe and few people die of Zika. However, if a pregnant woman is infected, she can pass the infection on to her child, and the infection can cause certain birth defects including microcephaly (smaller than normal head size). For this reason pregnant women traveling to an area where Zika virus is found should consider rescheduling the trip, but if they decide to travel, they should take precautions against being bitten, including using an effective mosquito repellent.