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At present, the covid-19 epidemic in India continues to be severe, with a total of more than ...

In 2020, the global covid-19 pandemic broke out, European and American countries began to co ...

Recently, India has been plagued by covid-19, with 400,000 new confirmed cases per day, more ...

In 2021, the covid-19 epidemic in various countries has eased, but it has made a comeback in ...