I seem to recall that during the svine flu, kindergardens and schools emphasized better hygiene (wash hands, hand sanitizer, cough in elbow) - with a (at least

I seem to recall that during the svine flu, kindergardens and schools emphasized better hygiene (wash hands, hand sanitizer, cough in elbow) - with a (at least anecdotal) dramatic reduction in sick leave. As kids didn't get sick at the same rate, did not infect parents who did not spread it in the work place at the usual rate.