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State, KU Study COVID-19 Detection in Wastewater

Todd PittengerMay 7, 2020

The Kansas Department of Health and Environment recently teamed up with the University of Kansas School of Engineering to determine if genetic remnants of COVID-19 can be detected in wastewater.

According to the state, the concept originally tested in Massachusetts and the Netherlands, and now throughout the United States, is that people infected with the virus shed it through their urine and feces. The genetic material can be extracted from wastewater and matched against genetic markers keyed to COVID-19. The virus itself does not survive in wastewater, and therefore wastewater is not a significant means of disease transmission.

Detecting the genetic material in wastewater is indicative of COVID-19 being present and may give local health officials knowledge of how widespread it is in their community, allowing them to take proactive measures to mitigate its spread. While drinking water is not part of this ongoing study, it’s important to note disinfection by all Kansas public water suppliers inactivates the virus and drinking water remains safe for consumption.

The Kansas project is still in its preliminary stages. KU collected samples from 12 wastewater plants in Kansas in late April. Some indication of the genetic material was found in the wastewater in 10 of those plants. Results are too variable and uncertain to make actual estimates of the extent of infection in those communities. The results were communicated to officials in cities that participated in the study.

“The initial results do show genetic indications from COVID-19 in wastewater; however, at best, we are at the presence/absence stage of evaluation process,” Tom Stiles, KDHE’s Bureau of Water director, said. “There is much more we need to refine in the methodology to assure quality control and that will start with further testing of samples. We don’t know how quantitative this approach can be, but we are hoping it gives us a means to corroborate our COVID testing of individuals, particularly in counties where positive cases have been low. Additionally, we may employ it as early warning surveillance should the virus come back in the fall or winter to give us a chance to get ahead of it.”

Samples were taken from a large city and a small town, each in five northeast Kansas counties with multiple wastewater facilities and sampled in Lawrence and Topeka. KDHE and KU are still evaluating the results and formulating plans for next steps in using the detection techniques.

Copyright © Rocking M Media, 2020. All Rights Reserved. No part of this story may be reproduced without Rocking M Media’s express consent.

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