I just read an article out of national geographic magazine from july 2007. Part of the article talks about how Stephen Hoffman and the Sanaria company are developing a vaccine with falciparum infected parasites from adult female mosquitoes, to create a vaccination against malaria. They weaken the parasites with with a quick dose of radiation, before packing them into a hypodermic needle. Now, would this type of vaccine be a killed type, attenuated or acellular vaccine?