15+ Covid 19 Symptoms Chart Background. It can also take longer before people show symptoms and people can be contagious for longer. Updated symptoms chart of covid 19 disease ref to world health organization.

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You can do this by carefully. This disease is more contagious than influenza such that cluster outbreaks occur frequently. It seems to start with a.

Updated symptoms chart of covid 19 disease ref to world health organization.

Some people may experience worsened symptoms, such as worsened shortness of breath and pneumonia, about a week after. Some people may have only a few symptoms, and some people may have no symptoms at all. The world health organization (who) was informed of cases of pneumonia of unknown microbial etiology associated with wuhan city, hubei province, china on 31 december 2019. Respiratory droplets containing the virus can remain on surfaces even after the ill person is no longer near.