Abstract
The seroprevalence in the population of 8 big cities (Ahmedabad, Jaipur, Bangalore, Pune, Coimbatore, Surat, Visakhapatnam, and Nagpur) of India and the dynamics of the COVID-19 spread have been compared. The seropositivity data are of the self-referred residents only. The research is useful to know if the seroprevalence that occurred in the population has decreased the surge in infection in the second wave of the pandemic. The seroprevalence data are for the period July-December 2020 while the monthly new infections have been studied for July 2020-June 2021. For the cities: Visakhapatnam, Nagpur, Surat, Pune, and Coimbatore, the seropositivity of the population reached a plateau and then decreased. A decrease in seroprevalence did not result in higher infection rates. The seropositivity of Jaipur, Ahmedabad, and Bangalore showed a monotonous increase. A relationship between the plateau values of seroprevalence and infection rates could be established. More seroprevalence resulted in lower infection rates in cities (Bangalore, Visakhapatnam, Jaipur) and (Surat, Coimbatore, Pune) in the second wave of COVID-19 pandemic. The investigation of seroprevalence in the population will help in ramping up vaccination to eradicate the pandemic.
Highlights
As on July 1, 2021, large number of daily new cases (>400,000) and deaths (>8,000) were reported [1]-[3] around the globe, the pandemic has not slowed down and waned yet
In Japan, novel coronavirus cases reached a peak of 6,505 new cases on May 15 in the fourth wave of infection, the cases started decreasing on June 24, a minimum of 1,438 cases were recorded
In the period February 11-May 9, the second wave of COVID-19 infections began in India in February, the pandemic was at the peak when the 7-day average of daily new infections increased 36 times [9]
Summary
Unit of Nanotechnology, Zakir Husain College of Engineering and Technology, Aligarh. Muslim University, Aligarh, India. Chemistry Department, College of Science, University of Hafr Al Batin, Hafr Al Batin, K.S.A
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