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@erictopol @lisamelton Cool thing I learned about wastewater surveillance - There is a virus, pepper mild mottle virus (PMMoV), present in peppers that are used for hot sauces, etc.

According to Wikipedia, it “is consistently found in wastewater from around the world at concentrations greater than 1 million copies per milliliter of raw sewage” and so makes for a good water quality indicator (as it comes almost exclusively from human feces, is stable, and detection is straightforward) as well as a tool to normalize SARS-CoV-2 concentrations for wastewater tracking.

https://en.wikipedia.org/wiki/Pepper_mild_mottle_virus
https://www.nature.com/articles/s41545-018-0019-5
https://pubmed.ncbi.nlm.nih.gov/35864362/