RT @victornizet
The late Prof. Stanley Falkow, pioneer of molecular microbiology, lectured to us as Stanford med students— “It is important, as future MDs, for you to understand that the earth is, for all practical purposes, covered with a thin microscopic layer of feces” https://phys.org/news/2023-02-bacteria-high-amounts-dog-feces.html
Measurement of bacteria levels shows high amounts of dog feces on New York City sidewalks

A pair of natural science researchers from Marymount Manhattan College has found that high levels of dog feces landing on sidewalks in New York city has resulted in high levels of bacteria in homes and businesses. In their paper published in the journal Indoor and Built Environment, Alessandra Leri and Marjan Khan describe collecting and testing environmental samples from a large number of sites on Manhattan's Upper East Side.

Phys.org
@enirenberg When I was a kid growing up in NYC there were no pooper scooper laws, so people constantly looked down while walking in an effort to avoid stepping in dogshit!