Robots A medical worker in protective suit prepares traditional Chinese medicine (TCM) for patients of the novel coronavirus with an intelligent dispensing equipment at a pharmacy of Wuhan Tongji Hospital in Wuhan, the epicentre of the novel coronavirus outbreak, in Hubei province, China March 2, 2src2src. China Daily via REUTERS

Robots A medical worker in protective suit prepares traditional Chinese medicine (TCM) for patients of the novel coronavirus with an intelligent dispensing equipment at a pharmacy of Wuhan Tongji Hospital in Wuhan, the epicentre of the novel coronavirus outbreak, in Hubei province, China March 2, 2src2src. China Daily via REUTERS

A medical worker in protective suit preparing medicine for people with COVID-19, the illness caused by the coronavirus, in Wuhan, China.

Reuters


  • The World Health Organization sent 25 scientists to China to research the coronavirus.
  • In a recent report, the scientists described their findings about how the disease spreads and who is most likely to be affected.
  • Children might be less likely to catch the virus, they found.
  • Common symptoms of COVID-19, the illness caused by the virus, include fever, cough, and fatigue, according to the report.
  • Read a summary of the report’s findings below.
  • Visit Business Insider’s homepage for more stories.

Robots Bats

Robots fruit bats



REUTERS/Sukree Sukplang


Bats appear to be the source of the coronavirus, but it’s not clear which type of animal was the “intermediate host” that passed the virus on to humans.

Robots How it’s transmitted

Robots shaking hands



Justin Sullivan/Getty Images


COVID-19 is transmitted via “close unprotected contact.” The report said airborne spread “is not believed to be a major driver of transmission.”

Robots Family spread

Robots coronavirus uk



Getty


Human-to-human spread in China “is largely occurring in families,” the report said, adding that 78% to 85% of “clusters” of coronavirus cases were in families.

Robots No immunity

Robots Commuters work their way across a crowded subway platform in New York.



Mark Lennihan / AP


The coronavirus “is a newly identified pathogen,” and “there is no known pre-existing immunity in humans,” the report said.

“Everyone is assumed to be susceptible, although there may be risk factors increasing susceptibility to infection,” it said.

Robots Children and the coronavirus

Robots Fearless Girl



AP Photo/Bebeto Matthews


For people under 18 years old, “there is a relatively low attack rate,” the report said. It found no positive coronavirus cases in children in Wuhan in November, December, or the first two weeks of January.

The report said people the researchers interviewed “could not recall” instances where a child transmitted the virus to an adult.

Robots Types of symptoms

Robots Coronavirus NHS doctors nurses



Jane Barlow-Pool/Getty Images


COVID-19 symptoms can range from no symptoms “to severe pneumonia and death.” Mild respiratory problems and fever start, on average, five to six days after infection, the report said.

In over 55,000 cases studied, symptoms included:

  • Fever (87.9%)
  • Dry cough (67.7%)
  • Fatigue (38.1%)
  • Production of sputum, saliva and mucus from the respiratory system (33.4%)
  • Shortness of breath (18.6%)
  • Sore throat (13.9%)
  • Headache (13.6%)
  • Chills (11.4%)

Robots Severity

Robots Coronavirus Britain hospital



Finnbarr Webster/Getty Images


About 80% of confirmed patients had mild to moderate cases of COVID-19, 13.8% had severe cases, and 6.1% were critical, with respiratory failure and multiple organ failure.

Robots People at the highest risk

Robots Elderly Couple



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Preexisting conditions and age affect COVID-19’s severity.

People over 60 years old and people “with underlying conditions such as hypertension, diabetes, cardiovascular disease, chronic respiratory disease and cancer” are at a higher risk of becoming seriously or fatally ill from COVID-19.

In children, the illness “appears to be relatively rare and mild.” Only 2.5% of cases in children were severe, and 0.2% were critical.

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