And in the case of the most pernicious malaria pathogen, that drug resistance is becoming worryingly complex. A map showing where the samples were collected, malaria intensity, and malaria parasite overlap. The genetic resistance pattern to the drug was found in 61.2 percent of 492 successfully classified samples. Parasites with chloroquine resistance markers, for example, were linked to more than threefold higher odds of also carrying artemisinin partial resistance markers. What health officials have now is the opportunity to adjust their surveillance strategies to better fit the changing, complex landscape of malaria parasite drug resistance.