Global Statistics

All countries
529,759,083
Confirmed
Updated on May 26, 2022 12:36 am
All countries
486,156,238
Recovered
Updated on May 26, 2022 12:36 am
All countries
6,306,291
Deaths
Updated on May 26, 2022 12:36 am
Thursday, May 26, 2022

Global Statistics

All countries
529,759,083
Confirmed
Updated on May 26, 2022 12:36 am
All countries
486,156,238
Recovered
Updated on May 26, 2022 12:36 am
All countries
6,306,291
Deaths
Updated on May 26, 2022 12:36 am
Molderizer and Safe Shield

Why the Virginia Department of Health is testing for COVID in the sewers

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Effectiveness of Homologous and Heterologous Covid-19 Boosters against Omicron

To the Editor: For persons who received a single dose of the Ad26.COV2.S vaccine (Johnson & Johnson–Janssen) against coronavirus disease 2019 (Covid-19),...


RICHMOND, Va. (WRIC) — As the latest wave of the COVID-19 pandemic subsides, doctors at the Virginia Department of Health say good news is coming from an unexpected place: the sewers.

Dr. Rekha Singh manages the Wastewater Surveillance Program at the Virginia Department of Health (VDH), which monitors the amount of COVID-19 found in water treatment facilities.

Recently, she said, the signs have been pretty good. “Based on our recent data, I would say it’s consistently decreasing.”

The testing works because humans expel “viral particles of SARS-COVID-2” – among other things – when they go to the restroom.

Unlike traditional testing, which can be expensive and require access to medical facilities, wastewater surveillance lets health authorities get a “snapshot” of COVID levels.

“This means a single sample can give an estimate of infection across the whole community,” Dr. Singh said.

There are 25 facilities located in water treatment plants across the Commonwealth that perform weekly tests to determine “the trends of the virus in communities”

Another advantage, especially with mild strains of COVID like the omicron variant, is that the tests reflect both symptomatic and asymptomatic cases, which might otherwise go unnoticed in traditional COVID case counts.

“This type of monitoring is very useful, and it can fill the gap when testing is very limited,” said Dr. Singh.

Nineteen of the state’s facilities recently reported that their viral loads were below detection – meaning there were very few cases in the community – but the program still plays an important role, Singh said, “It can provide early warning by detecting the disease ahead of clinical testing.”

The uptick will show up in wastewater about a week before formal case counts rise – so if you want to know when cases are set to rise, just watch your waste.



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