The best evolutionary strategy in human viruses is probably to cause mild upper respiratory tract or gastrointestinal disease such that it increases coughing and sneezing or causes diarrhoea.
Basically, the most successful viruses—colds and Norwalk like viruses—modify our behaviour by hijacking one of our body's defence mechanisms so that they can spread more easily.
I would guess that the mildest form of disease sufficient for such behaviour changes would probably be the best strategy. This would keep the infected host active enough to circulate and spread the virus.
My layman's opinion on covid is that it will become weaker the more it spreads through the population, to the point that when most of us inevitably get it it will cause symptoms like a cold or mild flu.
Basically, the most successful viruses—colds and Norwalk like viruses—modify our behaviour by hijacking one of our body's defence mechanisms so that they can spread more easily.
I would guess that the mildest form of disease sufficient for such behaviour changes would probably be the best strategy. This would keep the infected host active enough to circulate and spread the virus.
My layman's opinion on covid is that it will become weaker the more it spreads through the population, to the point that when most of us inevitably get it it will cause symptoms like a cold or mild flu.