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Resource centre on India's rural distress
 
 

Wastewater surveillance for COVID-19 reveals dynamics of infection -Shubashree Desikan

-The Hindu

The method can reveal trends in viral loads, infections due to new viruses, AMR genes and act as advance warning system

In ensuring sufficient precautions and preventive measures be taken in pandemic-driven situations, a very important estimate is of the number of people infected, regions where infection is high and decreasing or increasing trends in viral load. Based on this, civic bodies can decide on targeted vaccination drives, lockdowns and the like. One way to estimate this is by getting people to take COVID test.

However, people do not always comply with testing protocols. In the case of SARS-CoV-2, the high number of asymptomatic and mild infections, also lead to low testing. Finally, if there are one lakh people in a locality, testing one lakh persons every day to monitor the rise and fall of infections is expensive and impractical. 

Gauging the parameters

Waste-water based surveillance for COVID-19 comes as an efficient and foolproof way of gauging these parameters. Such a study has been carried out in Hyderabad and Bengaluru by a collaboration between Tata Institute for Genetics and Society (TIGS), Bengaluru, and Centre for Cellular and Molecular Biology (CCMB), Hyderabad.

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