A planeload of people from South Africa arrived in San Francisco three days before Thanksgiving. One of them was a woman who caught COVID-19 infection lately but didn’t realize it for another week. On the same day, experts in Botswana and South Africa, 10,000 kilometers away, began warning the globe about a new and severely mutated variant of the coronavirus that causes COVID-19.
Alexandria Boehm, a civil engineering professor at Stanford University, saw the common trend of alterations in a hitherto variant and acted quickly. Boehm and her Sewer Coronavirus Alert Network (SCAN) team of 45 individuals have been acquiring and analyzing daily sewage samples from wastewater treatment plants around Northern California for more than a year. They have been looking for pieces of the novel coronavirus.
Now, for the first time, the CDC had published the data looking at how much the coronavirus is showing up in the country’s wastewater. The tests have shown a decrease in the viral load among two-thirds of the 255 sites included in the study.
In the coming weeks, 500 more sites will be submitting the data, says CDC.
For more details at CNN, here is the link;