“If the community spread becomes VERY extensive, we will need to consider measures to reduce human-to-human interactions, such as cancelling mass gatherings....”

(Source:
https://www.straitstimes.com/singapore/coronavirus-multiple-lines-of-defence-in-place-to-guard-against-local-spread-in-singapore)

他说："This is the known unknown, and we have to assess what best to do, depending on how the virus mutates. For example, it may also become LESS infectious or LESS severe."

他的思路是这样的。