The title of this episode says it all. And we don’t just mean literally – because the aftermath of a mosquito bite isn’t always as simple and annoying as the large, itchy bumps you’re left scratching for days. Those bites can also bring some serious and sometimes deadly threats – like malaria, for example. This week, the docs give us the (dark) history on these little winged murderers, plus some bonus info on other infectious diseases that’ll probably keep you up at night.