The United States federal government will collaborate with local health workers to test sewage systems to detect traces of the coronavirus. The initiative has been taken up to aggressively contain the further spread of the coronavirus in the country, according to the US Centres for Disease Control.

The initiative is called National Wastewater Surveillance System (NWSS) in response to the Covid-19 pandemic. The data generated by NWSS will help public health officials to better understand the extent of Covid-19 infections in communities, CDC said on its official website.

CDC believes that sewage testing can be successfully used as a means of early detection of other diseases, such as polio.

The agency noted that the SARS-CoV-2 can be shed in the faeces of individuals with symptomatic or asymptomatic infections; therefore, wastewater surveillance can capture data on both types of infections.

It added that almost 80 per cent of US households are

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