Which experts are saying masks are not effective? From what I read the experts (curiously from countries that did not prepare enough masks for their hospitals) say it is not recommended for the general public to wear a mask. They definitely still recommend nurses, doctors, and sick people to wear one. But they never explicitly say that masks do not reduce transmission. They may have said "there is little evidence to suggest..." which is not the same as masks do not reduce transmission.
The official position for many countries that are containing the virus suggests wearing a mask when out in public. One notable exception is Singapore.
Here is the Korean society of infection FAQ that says wearing a mask can reduce transmission:
The official position for many countries that are containing the virus suggests wearing a mask when out in public. One notable exception is Singapore.
Here is the Korean society of infection FAQ that says wearing a mask can reduce transmission:
https://translate.google.com/translate?sl=ko&tl=en&u=http%3A...