Posted on 29-Mar-2020

Er. Rohit Kumar Sah

It has been only three months since reports first emerged from China of an unknown virus causing unusual cases of pneumonia, and scientists and public health experts already know more about it and how it works than at the same point in earlier outbreaks.

But there's still a lot they don't know.

As the new coronavirus continues to spread around the world, here are some of the most important questions researchers and doctors - as well as policymakers and economists - are still trying to answer:

How contagious is the virus?
The virus spreads from person to person through small droplets from the nose or mouth via coughing or sneezing, according to the World Health Organization (WHO). It can persist on most surfaces up to several days, so in addition to directly inhaling the virus, you can become infected by touching something that has been contaminated and then touching your own nose, mouth or eyes. There is some evidence that virus particles in the feces of an infected person can transmit the disease through contact, but that remains unconfirmed.

How many people are infected, and how many do not show any symptoms?
So far, more than 550,000 cases have been reported worldwide, of which more than 127,000 have recovered and more than 24,000 have died. Some researchers estimate that up to 80% of people who are infected show no or only mild symptoms and may not even know they are sick. That would put the number of people who might have been infected in the millions.
Get quote
Message sent. We'll get back to you soon.