Coronavirus disease (COVID-19) | 2020-2021 |
Автор: Start Tv
Загружено: 2021-02-08
Просмотров: 379
What do you know about the coronavirus disease (COVID-19) that is causing a health emergency? #coronavirus #COVID-19
Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). COVID-19 is caused by a coronavirus that has not been previously identified in humans (SARS-CoV-2).
There are many types of coronavirus. Some cause mild illnesses, such as the common cold. Others can cause severe acute respiratory syndrome (SARS) or Middle East respiratory syndrome (MERS), which can be life threatening.
Many coronaviruses are present in animals but do not affect humans. Sometimes, however, a virus mutates in a way that allows it to infect humans. Scientists call these human coronaviruses, or “HCoVs.” This video shows the Top 20 countries by total coronavirus infections (confirmed cases) from January 15, 2020 to January 7, 2021. It first started in Wuhan, Hubei, China, then spread to all countries except for Turkmenistan and North Korea outside the continent of Oceania.
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