What it’s the origin of covid-19?
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el mUrziElag0
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In December 2019 in the city of China, there was an outbreak of pneumonia and that weeks later it was confirmed that it was caused by a new virus called covid 19.
What is covid 19?
It is a group of viruses common among animals, some can be transmitted by humans and usually affects the airways.
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OJALA TE AYUDE :)
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