We know that the virus's main route of transmission from one person to another is through droplets which are sneezed or coughed out by infected people. A single cough can produce up to 3,000 droplets, while a sneeze can produce as many as 10,000.
These droplets then land in or are breathed into another person's airways, or fall on a surface that is touched by an uninfected person, who then touches their face - specifically their mouth, nose, ears or eyes.
This method of transmission is known as "droplet spread". While it is in these droplets, the coronavirus is only in the air for a short time and travels only a short distance before it is pulled down by gravity after being coughed or sneezed out.
The government estimate relies on a global statistic - 6 to 8 percent of the population has rare diseases - the population of 1.3 billion A sudden lockdown like this may have left many without stocks of their hard-to-source medication.