The barbers clippers are mentioned in a comment relating to Ebola, which can be by spread by blood to blood contact. If clippers accidentally nick someone, the Ebola gets in.
I think you meant "Cholera", not malaria as the reason for boiling drinking water.
Many parts of the Kenya highlands drop below freezing point almost every night, even if they do heat up to 70 degrees at midday. Even Nairobi has a large daily variation.
Soap works on the Coronavirus by disolving the fatty acid layer that binds its other two protein chains together.
[vox.com]

@Petter I was told to avoid local water and drink bottled water because of the zygot that mosquitoes carry. I boiled water to kill that and other germs. If I avoided both malaria and cholera that is fine but the locals are more affected by malaria. My ex still had a came over to America on the plane. A woman I know had a fit that they let here travel and I told her that malaria is not contagious.

@DenoPenno I think you were "had". In 47 years of living in Kenya, and drinking water directly from taps and mountain streams, I never caught malaria.
What I did do was avoid being bitten by Anopheles mosquitos by sleeping under a net when necessary, such as at low altitudes.

@Petter We slept under netting at night. How was I "had." Boiling the water hurts nothing and it was our people who said to only drink bottles water.

@DenoPenno They must have had shares.

As a third generation Kenyan, I agree with you. Africa is a huge and varied continent, not simply a country as so many people regard it.

Italy has malaria.

Difficult when you live in a crowded slum.
Kibera, in Nairobi, Kenya, is Africa's largest slum.