The serological survey in Himachal Pradesh found that 87% of the state’s population had developed antibodies against the Covid-19 virus.
The survey was conducted by the state health department in collaboration with the National Institute of Epidemiology and the World Health Organization (WHO).
The state has already achieved first place in the country by administering the first dose of vaccination against Covid-19 to its population.
The investigation found that people over 60 in the state are in the lead for developing antibodies to Covid-19.
Experts attribute immunity to the vaccination taken by study participants, while immunity in others could result from their exposure to COVID-19 infection.
Kinnaur leads the state in districts to have developed immunity to Covid-19 with 95.6% of its population reporting a high level of immunity. While Una, a border district with Punjab, reported 76.1% immunity, the lowest in the state.
The survey also looked at children in the state who developed immunity to Covid-19 with 53.6% of children aged 6 to 9 and 61.5% of children aged 10 to 17 also having developed immunity against the virus.
About 95.5% of people, who were vaccinated with the first dose of Covid-19 and 97.6% of people, who were vaccinated with the second dose of Covid-19 were found to have developed immunity to the virus .
Hemraj Bairwa, director of the National Health Mission (NHM), said the government had sent medical teams to the blocks for a house-to-house survey of selected participants to collect blood samples.
Himachal Pradesh covered a population of 56.41 lakh for the first dose of vaccination, while 25.28 lakh received the second dose.
The target population was only 53 lakh, but now vaccination teams are also covering migrant workers and tourists.
November 30 has been set as a date for 100% coverage for the two doses of Covid-19 in the state.