Coronavirus anti-bodies
Two-thirds of Indians have coronavirus antibodies, survey shows
About 400 million of India's 1.4 billion people did not have antibodies, the survey showed
Mumbai sero survey: 27 per cent health workers have developed COVID-19 antibodies
The BMC had conducted the second round of sero-survey along with other organisations in the second half of August
Some severe COVID-19 patients may not develop long-lasting immunity to coronavirus: Study
Based on studies of other coronaviruses that cause colds, people can get infected with the same coronavirus more than once in the same year
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