Question

Topic:- Covid-19,a new challenge to human existence.

For project. Plese answer fast
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Answer 1

Answer:

corona virus is new virus ask it from another way

Answer 2

Explanation:

Human-to-human transmission of SARS-CoV-2 was confirmed on 20 January 2020, during the COVID-19 pandemic.

Transmission was initially assumed to occur primarily via respiratory droplets from coughs and sneezes within a range of about 1.8 metres