Portable smart samplers from Israel’s Kando (see here previously) are testing the wastewater for many Negev Bedouin communities. They provide early warnings for outbreaks of anything from diarrhea and dysentery to polio, flu, norovirus and Covid.

https://nocamels.com/2023/02/testing-sewage-for-disease-helps-off-grid-bedouin-communities/