I live in a mosquito ladden region and some mosquitoe individuals ingest blood until they can no longer fly (they die) Many mosquitoe individuals feed until full, not necessarily from only one human.

Now, some people are more resistant to some diseases than others. Sickle cell anemia heterozygote humans can live with plasmodium alright.

What surprises me is that someone around an airport in Germany (urban area) actually died of malaria. Malaria causes intervals of very high fever which lead to hospitalization and treatment.