Malaria outbreaks, carried by the Anopheles freeborni mosquito, in the early 1830s killed 90 percent of about 14,000 Oregon Indians who lived in the lower Columbia and Willamette river valleys, according to Oregon Historical Society documents.
Anopheles freeborni still is biting valley dwellers.
Use of Gambusia affinis as a biological agent against Culex tarsalis and Anopheles freeborni
in Sacramento valley rice fields.
, and Anopheles stephensi with Plasmodium malariae and Plasmodium brasilianum.
The malaria-causing microbe doesn't live in California, but the state harbors populations of Anopheles freeborni
, a mosquito that can carry the parasite.