Question

Write preface for a project on topic COVID 19

Answer 1

Coronaviruses were first identified by a group of virologists (J D Almeida, D M Berry, C H Cunningham, D Hamre, M S Hofstad, L Mallucci, K McIntosh, and D A J Tyrrell), who relayed their findings in 1968 to the journal Nature, which published a brief annotation

Until recently, most people will never have heard of coronaviruses. But they, and the diseases they cause in humans and animals, have been recognized for over 50 years.

Answer 2

Explanation:

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