Those dang howler monkeys! One minute they’re cameoing in death metal bands, the next they’re spreading malaria in regions where we thought we had eradicated the disease decades ago. Two malaria outbreaks in Brazil over the past couple years tipped off scientists that something was going on, though they were initially thought to have been caused by the typical, human version of the parasite. When researchers at the Instituto Nacional de Infectologia Evandro Chagas in Rio de Janeiro investigated, they found some of the cases were in fact caused by a typically monkey-exclusive version which is actually… the best-case scenario?? Apparently, if those outbreaks weren’t caused by the monkey-version, then there’s a bunch of human malaria in those monkeys which would be even scarier. Yikes.