Coronavirus disease

Novel coronavirus pneumonia (Corona Virus Disease 2019, COVID-19), referred to as “new crown pneumonia”. The World Health Organization named it “coronavirus disease 2019”. Refers to the pneumonia caused by the 2019 novel coronavirus infection.

On February 11, 2020, WHO Director-General Tedros Adhanom Ghebreyesus announced in Geneva, Switzerland that the pneumonia caused by the new coronavirus will be named “COVID-19”. On February 22, the National Health Commission issued a notice: The English name of “new coronavirus pneumonia” was revised to “COVID-19”. On March 11, the World Health Organization considered the current COVID-19 outbreak to be called a global pandemic.

Coronavirus disease

Disease characteristics

According to the existing case data, the new coronavirus pneumonia is mainly manifested by fever, dry cough, and fatigue. A small number of patients have upper respiratory and gastrointestinal symptoms such as nasal congestion, runny nose, and diarrhea. Severe cases mostly have difficulty breathing after 1 week. Severe cases rapidly progress to acute respiratory distress syndrome, septic shock, refractory metabolic acidosis, coagulation dysfunction, and multiple organ failure.

It is worth noting that severe and critically ill patients may have moderate to low fever or even no obvious fever during the course of the disease. Mild patients only showed low fever, mild fatigue, etc., without pneumonia. Judging from the current cases, the prognosis of most patients is good. A small number of patients are critically ill. The elderly and those with chronic underlying diseases have a poor prognosis. Children’s cases are relatively mild.

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WHO Director-General Tedros Adhanom Ghebreyesus said on March 11, 2020 that the new crown pneumonia epidemic has the characteristics of a pandemic.

The extent and severity of the outbreak is deeply worrying, Tedros told a regular news conference in Geneva. “Therefore, we assess that the new crown pneumonia epidemic has the characteristics of a pandemic.”
“We’ve never seen a coronavirus pandemic before. We’ve never seen a contained pandemic before,” he said.

He stressed that describing the Covid-19 outbreak as a “pandemic” would not change the WHO’s assessment of its threat. “It doesn’t change what the WHO is doing, and it doesn’t change what countries should be doing.”

The novel coronavirus pneumonia is in the early stage of rapid change. China has released the full genome sequence of the novel coronavirus that causes COVID-19. This will help scientists and public health organizations around the world join in the development of diagnostic reagents, as well as virus pathogenicity research.

The National Health and Medical Commission has issued Announcement No. 1 to include pneumonia caused by the new coronavirus as a Class B infectious disease under the Law on the Prevention and Treatment of Infectious Diseases. However, prevention and control measures for Class A infectious diseases are adopted, and they are included in the management of quarantinable infectious diseases.

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