Why in news?

• After decline in symptomatic Covid-19, INSACOG has started surveillance of sewage water samples across 55 sites to detect Sars-CoV-2 presence.
• INSACOG is a consortium of 38 laboratories established in 2020 to assess SARS-CoV-2 genomic variants from Indian patients.
• It was jointly established by the Ministry of Health and Family Welfare, Department of Biotechnology (DBT), Council for Scientific & Industrial Research (CSIR) and Indian Council of Medical Research (ICMR).
• It helps to correlate whole genomics sequencing (WGS) data with clinical/epidemiological data for advance preparedness for public health interventions.