Concept and symptoms of Covid-19
The World Health Organization (WHO) warns that the Delta and Delta Plus mutations are threatening the epidemic control efforts of many countries around the world.
The rate of serious problems and high mortality from Covid-19 is up to 19% in patients over 70 years old, 10.5% in people with cardiovascular disease, 7.3% in people with diabetes.
Like viruses, corona MERS-CoV, SARS-CoV, 2019-nCoV is the cause of a series of acute respiratory diseases with dangerous signs/symptoms including high fever, headache, cough, shortness of breath. and often progress to pneumonia. In severe cases, the patient also has organ failure. If not detected and treated promptly, it can lead to death. The incubation period is 2-10 days.
This new virus, called 2019-nCoV, had never been detected before the outbreak was reported in Wuhan City, Hubei Province, China in December 2019. The pandemic of acute respiratory infections caused by a new strain of coronavirus has lasted so far in 215 countries, causing tens of millions of people to be infected, and millions of people have died around the world and have not shown any signs of "cooling down".
Corona virus is a new virus strain that has never appeared in humans, whose name comes from Latin origin. Corona virus is a virus that is surrounded by spikes on the outside, interacting with receptors on cells, following a mechanism similar to keys and locks, thereby allowing the virus to enter inside.