The answer is Bantu.
They had already developed immunity to malaria due to exposure in their native environment.
As they migrated southwards to conquer more land, they met the pygmies and the Khoisan. The Bantus had carried with them the malaria vectors.
When the mosquitos infected the pygmies
and the Khoisan populations, who had no
immunity against malaria, the disease reduced their populations drastically hence
enabling the Bantus to conquer their
land.
Answer:
I believe coronavirus is a man made virus from China except that it got released into the public.
Explanation: