The first confirmed case of the global pandemic of coronavirus disease 2019 covid 19 in the united states was announced by the state of washington on january 21 2020. You can see that in the chart below first published in the report of the who china joint mission on coronavirus disease 2019 covid 19 in february 2020.
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The number of people with coronavirus is higher than these figures show.
Covid 19 symptoms percentage chart. On february 29 and later announced that two deaths there on february 26 were also due to covid 19. Transmission before symptoms the percentage of infected people that can still spread the disease even though they dont have any symptoms yet due to incubation period of a virus. The symptoms of covid 19 vary from case to case but the most common ones in china from february data are fever and dry cough which are each seen in a majority of cases fatigue and sputum.
People with no or minor symptoms or who cant get their symptoms tested for covid 19 dont appear on graphs like this. But about 1. Detection of antibodies can be used both for diagnosis and population surveillanceantibody tests show how many people have had the disease including those.
Covid 19 is a respiratory condition caused by a coronavirus. Most people will have mild symptoms and get better on their own. Some people are infected but dont notice any symptoms.
For covid 19 its believed to be more than 10. Washington made the first announcement of a death from the disease in the us. For covid 19 more that 10 of patients are infected by somebody who has the virus but does not yet have symptoms.
This is compared to 54 percent of those with a confirmed case of covid 19 in the united states according to the cdc. It shows the cfr values for covid 19 in several locations in china during the early stages of the outbreak from the beginning of january to 20th february 2020. Why covid 19 is worse than the flu in one chart its more contagious more deadly particularly for older people and it has a greater potential to overwhelm our health care system.
The percentages displayed in this chart cannot be accurate because no scientific consensus exists on the efficacy of homemade masks in stopping the spread of covid 19. Here are some common symptoms of the flu. Covid 19 testing can identify the sars cov 2 virus and includes methods that detect the presence of virus itself rt pcr isothermal nucleic acid amplification antigen and those that detect antibodies produced in response to infection.
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