Concentrations of the virus in two of seven Las Vegas Valley wastewater collection sites show levels approaching those last seen during the winter wave of infections, scientists have found.
from https://www.reviewjournal.com/news/politics-and-government/clark-county/coronavirus-concentrations-in-sewage-near-peak-level-researchers-say-2395251/
from
https://calliduselctric.tumblr.com/post/656108074593124352
from https://bettyoverton.blogspot.com/2021/07/coronavirus-concentrations-in-sewage.html
from
https://bettyoverton.tumblr.com/post/656108646528319489
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