Delhi’s serological survey

The result of a serological survey was declared by the Ministry of Health and Family Welfare carried out in DELHI.
This study has been done by the National Centre for Disease Control [NCDC] in collaboration with Government of National Capital Territory of Delhi.
A serological survey seeks to assess the prevalence of disease in a population by detecting the presence of specific antibodies against the virus.
The survey included the IgG Enzyme-Linked Immunosorbent Assay (ELISA) test which estimates the proportion of the population exposed to SARS-CoV-2 infection.
- The IgG test is not useful for detecting acute infections, but it indicates episodes of infections that may have occurred in the past.
- The test has been approved by ICMR for its high sensitivity and specificity.
Since it is not possible to test everyone in the population, serological studies are used as a tool to make an estimate of the extent of disease spread in the community.