I can't see anywhere the cite(s) proving this fantabulous claim. Without that, we can assume that it came out of thin air for dramatic effect.
Mosquitoes kill a lot of people, but not "half of the humanity". One on each two persons that you know in your city are killed by mosquitoes? Seriously? Why are we still focused on car crashes and heart strokes?
Of the people killed by malaria, 95% are Africans. One of each two people in Africa are killed by malaria?. World Health Organization says that in 2024 there was 282 million cases of malaria and of those, more than 281 millions survived [1]. This is not a fifty percent of mortality in my book.
Malaria mortality is a 2% in the worse locations, 0.5-1% in most of Africa and lower in India or China.
https://www.who.int/teams/global-malaria-programme/reports/w...