UK health authorities have classified Cape Verde as having a risk of Zika virus transmission. There have also been sporadic cases of malaria reported in the capital city, Praia (Santiago Island). Active local transmission of Zika virus by Aedes species mosquitoes has been identified as of August 2016. It poses an important risk if bitten by an infected mosquito. Other less common ways to get Zika are through sex, via blood transfusion, or during pregnancy, in which the pregnant woman passes Zika virus to her fetus.