For many people, warmer weather means more days spent in the sun and long evenings outdoors. It also means mosquito bites. Even if you're one of the lucky people that receives relatively few, you've probably noticed that not all people get bitten with the same frequency. And while frequent bites might simply be a nuisance for some, it could mean a much higher incidence of nasty diseases such as malaria, dengue and chikungunya in some parts of the world. According to a new study published in PLOS One, your genes have a lot to do with that.