A medical research study from the 'Annals of Internal Medicine' journal has found out that the incubation of the SARS-CoV-2 virus, which causes the coronavirus disease (COVID-19), has an incubation period of 5 days. SARS-CoV-2 is a type of coronavirus that causes illness in humans and animals.

coronavirus symptoms
This new virus is dangerous because it takes so long for the symptoms to appear

The incubation period is the time elapsed between exposure to a pathogenic organism, a chemical, or radiation, and when symptoms and signs are first apparent. In the case of COVID-19, most people would not start showing symptoms of the disease for 5 days!

Why the coronavirus is scary - Long incubation period

According to researchers, the median incubation period is about 5 days for the novel coronavirus. The study also revealed that 97.5% of people who have COVID-19 symptoms will start having them within 11 and a half days of exposure.

coronavirus doctors
People can show symptoms two weeks after exposure

This is why the standard quarantining period around the world is 14 days to make sure a person does not have COVID-19. The worrying thing is, researchers found, that out of 10,000 people who get quarantined for 14 days, 100 people develop symptoms after their quarantine is over!

Justin Lessler, an associate professor in the Bloomberg School's Department of Epidemiology, explained that even with quarantining, some cases can still slip through.

"Based on our analysis of publicly available data, the current recommendation of 14 days for active monitoring or quarantine is reasonable, although with that period some cases would be missed over the long-term," Lessler said.

coronavirus quarantine
People can show no symptoms for many days while being around in public

The new study was based on 181 cases of people from China and elsewhere detected before February 24. The cases are from those reported in the media along with possible dates of exposure and symptoms onset. All the cases have a history of traveling to Wuhan city or Hubei province in China.

Stay tuned and check out our coronavirus section on GuruGamer.com for more news and updates on the complex developments of the dangerous new coronavirus, COVID-19.