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Volume 27, Number 2—February 2021

Population-Based Serosurvey for Severe Acute Respiratory Syndrome Coronavirus 2 Transmission, Chennai, India

Sriram Selvaraju, Muthusamy Santhosh Kumar, Jeromie Wesley Vivian Thangaraj, Tarun Bhatnagar, Velusamy Saravanakumar, Chethrapilly Purushothaman Girish Kumar, Krithikaa Sekar, Ezhilarasan Ilayaperumal, Ramasamy Sabarinathan, Murugesan Jagadeesan, Masanam Sriramulu Hemalatha, Manoj Vasant MurhekarComments to Author , and the Chennai COVID Sero-Surveillance Team
Author affiliations: Indian Council of Medical Research–National Institute for Research in Tuberculosis, Chennai, India (S. Selvaraju, K. Sekar, E. Ilayaperumal); ICMR–National Institute of Epidemiology, Chennai (M. Santhosh Kumar, J.W. Vivian Thangaraj, T. Bhatnagar, V. Saravanakumar, C.P. Girish Kumar, R. Sabarinathan, M.V. Murhekar); Greater Chennai Corporation, Chennai (M. Jagadeesan, M.S. Hemalatha)

Main Article

Table 1

Characteristics of 12,405 participants in a SARS-CoV-2 serosurvey, Chennai, India, July 2020*

Characteristics No. (%)
Age, y, n = 12,319
10–19 1,473 (12.0)
20–29 2,105 (17.1)
30–39 2,353 (19.1)
40–49 2,353 (19.1)
50–59 1,927 (15.6)
2,108 (17.1)
Sex, n = 12,319
M 5,785 (47.0)
F 6,493 (52.7)
41 (0.3)
History of respiratory symptoms, n = 12,248 175 (1.4)
Symptomatic persons seeking medical care, n = 175 121 (69.1)
Hospitalization among persons seeking medical care, n = 121 71 (58.7)
Reported contact with COVID-19 case, 
n = 12,248 173 (1.4)

*Among 12,405 persons enrolled in the survey, age and sex data were not available for 86 participants. COVID-19, coronavirus disease; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

Main Article

Page created: December 03, 2020
Page updated: January 24, 2021
Page reviewed: January 24, 2021
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