ICMR, NCDC to initiate a population-based Sero-survey in selected districts
ICMR, NCDC to initiate a population-based Sero-survey in selected districts

ICMR, NCDC to initiate a population-based Sero-survey in selected districts

  • Indian Council of Medical Research, ICMR and National Centre for Disease Control (NCDC) will conduct a population-based sero-survey in selected districts in collaboration with key stakeholders and State Health Departments.
  • The objective of this survey is to monitor the trend in prevalence of COVID-19 infection at district level.


Testing of blood serum of a group of individuals to determine the presence of antibody against that particular disease.


  • It would test outpatient attendees and pregnant women in the low-risk group.
  • Health workers will be covered in the under the high risk group.
  • It will not be used for diagnosis of individual patients.


  • Each month 200 samples per district per week shall be taken. This will take the number to 800 samples per district per month.
  • ICMR AND NCDC will select 10 health facilities including six public and four private health from each district.
  • The samples will be tested in a one-time pool of 25 and result of sample pooling is only for surveillance purposes.
  • In addition to throat, nasal swabs, blood samples will be collected for detecting IgG antibodies for ELISA testing.
  • In subsequent rounds, IgG ELISA based testing of serum samples will replace RT-PCR based testing for surveillance purpose.
  • Data on demographic characteristics will be collected on a specifically designed standard data collection form.
  • The data will be analyzed locally for action using standard indicator formats.

ABOUT IgG (Immunoglobulin G)

  • Type of antibody and is the most common antibody in the human serum.
  • Antibodies are proteins that are produced inside the human body response to disease causing pathogens.
  • These are of five types- IgM, IgD,IgG, IgA, and IgE.


  • ELISA stands for Enzyme-Linked Immunosorbent Assay.
  • A commonly used analytical biochemistryassay and a diagnostic tool in various industries.


  • Apex body in Indiafor the formulation, coordination and promotion of biomedical research.
  • HQ- New Delhi
  • Secretary and Director General-Dr. Balram Bhargava


  • Institute under the Indian Directorate General of Health Services, Ministry of Health and Family Welfare.
  • HQ- New Delhi
  • Has eight branches
  • Director- Dr. Sujeet Kumar Singh

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