Guides for effective preventing transmission of viruses and bacteria?

[OBEler]

Hello,

are there good informations/guides out there which really help with prevention of getting ill with viruses and bacteria? I want to follow the pareto principle (20% of the preventions should help you to get 80% less infection rate) and dont want to follow blindly every hygiene rule. 

Are there guides out there which show which steps are the most effective and efficient ones?

[OBEler]

@Michael569 Yeah good point

 

But on the other hand these high Infektious Viruses out there(corona, flu) would be good not to have contact with them at all