Skippy states- Just because it doesn't cause an active infection doesn't mean you won't get sick.
"Sick" is a active infection of some sort. We can debate our personal "feelings" and observations all day long but the Facts of science do not care- Herd immunity, works.

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2dieseljohn
1979 300sd (283,000+) Road Trips
1983 240D 4-speed (350,000+) Daily Driver
1967 E-TypeS1 in bits and pieces