The malaria parasite finds new tricks. Artemisin is the best drug against malaria, extracted from the annual wormwood plant (Artemisia annua) known to the Chinese herbalist for a millennium or two. From the New York Times, we find that the malaria parasite is evolving resistance to artemisin. A resistant strain of the parasite has been found along the Thai-Cambodian border.
The full article may be found at
http://www.nytimes.com/2009/01/27/health/27malaria.html