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4th Serosurvey of Tamil Nadu: Infection and Vaccine Generated Hybrid Immunity

Author

Listed:
  • Zameer Shervani

    (Food Energy Security Research Product Centre, Japan)

  • Roma Nikhat

    (Food Energy Security Research Product Centre, Japan)

  • Sadia Hasan

    (Government Polytechnic, India)

  • Nudrat Jamal

    (Genomia Diagnostics Research Pvt. Ltd., India)

  • Kehkeshan Fatma

    (Aligarh Muslim University, India)

  • Umair Yaqub Qazi

    (University of Hafr Al Batin, K.S.A)

  • Venkata Phani Sai Reddy Vuyyuru

    (Citizens Speciality Hospital and American Oncology Institute, India)

  • Adil Ahmed Khan

    (All India Institute of Medical Sciences, (AIIMS), India)

  • Parangimalai Diwakar Madan Kumar

    (Ragas Dental College and Hospital, India)

  • Muhammad Jehanzeb Khan

    (Food Energy Security Research Product Centre, Japan)

  • Aisha Mahmood

    (King George’s Medical University, India)

  • Rabiya Khan

    (Gurukul Mahila Mahavidyalaya, India)

Abstract

Salient findings of the fourth serological survey of SARS-CoV-2 infections conducted among the age cohort above 10 years in Tamil Nadu (India) have been described. The overall seroprevalence of 87% was reported in the survey done in December 2021, whereas in the first, second, and third surveys, the seropositivity was 32%, 29%, and 70%, respectively. The % share of the antibodies formed due to vaccination in the third and fourth surveys have the contributions of 6.2% and 28.3%, respectively as per the vaccination record of the state since the above given proportion of the state’s population (full population) was fully vaccinated (two-dose) by the time the two surveys were conducted. Age-wise break up of seropositivity of the fourth survey showed that the cohort of 10-18 years had the least (68.4%) seroprevalence and adults above 60 had the highest at 84.5%. The rate of the spread of the virus decreased due to the hybrid immunity developed by infection and vaccination. Using the vaccination and serological data, the % enhancement of the antibodies formed due to vaccination has been worked out in the real world on the ground.

Suggested Citation

  • Zameer Shervani & Roma Nikhat & Sadia Hasan & Nudrat Jamal & Kehkeshan Fatma & Umair Yaqub Qazi & Venkata Phani Sai Reddy Vuyyuru & Adil Ahmed Khan & Parangimalai Diwakar Madan Kumar & Muhammad Jehanz, 2023. "4th Serosurvey of Tamil Nadu: Infection and Vaccine Generated Hybrid Immunity," European Journal of Medical and Health Sciences, European Open Science, vol. 5(2), pages 41-48, March.
    • Handle: RePEc:epw:ejmed0:v:5:y:2023:i:2:id:41525
    DOI: 10.24018/ejmed.2023.5.2.1525
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