Thread by tern: I'm old, so I used to work making buildings safe from airborne pathogens like Legionella. Do you know why you don't keep catching Legionella?

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I'm old, so I used to work making buildings safe from airborne pathogens like Legionella.

Do you know why you don't keep catching Legionella?
Because old people like me worked on making buildings safe from airborne pathogens like Legionella.
We figured out how to stop it.
There are still very occasional outbreaks, but generally buildings and their maintenance schedules are now set up in a way that Legionella is rarely a problem.
Incidentally, we know how to reduce transmission of another airborne pathogen, SARS-CoV-2: hepa filters, ffp2/3 n95+ masks, ventilation, far UV, all that kind of stuff, but people aren't doing it because I don't know.
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Luca Dellanna 2mos

The reason we don’t have Legionella disease anymore is because we adapted our buildings to it (great thread below) Also, did you know Malaria was endemic in Italy? (green area in the map below) Thankfully, people at the time didn’t think it was inevitable