This is my attempt to summarize all the latest info on the efficacy of masks against the coronavirus. In this post, mask = surgical masks and respirator = N95 respirators.
You should wear a surgical mask. All evidence points to it. Whether it’s effective in protecting you from the coronavirus is debatable, but the evidence points to it being better than nothing. Where it’s most helpful is in helping contain the spread. Many people with coronavirus are asymptomatic, so the mask does a ton in preventing them from spreading coronavirus to others. If everybody wore masks, the virus would probably spread a lot more slowly. In fact, we should probably wear masks all the time when we’re in a public space in the future, like they do in Asia.
You should not wear a respirator. If your local hospitals are short on respirators, you should donate them. Respirators are hard to put on properly and even doctors that have been trained in putting them on have problems wearing them properly, so you probably are not using them right. It’s much better for society if you just don’t buy them at all, given the shortage, and buying masks instead will give you basically the same results and save you money.
Yes, the media was misinformed when they said that you shouldn’t wear a mask. To be fair, it wasn’t really their fault as they were just relaying the message of the central medical authorities. Maybe the authorities thought that the public couldn’t handle the nuance between buying and wearing masks vs. not buying respirators.
So, should you buy and wear masks? Yes. Should you buy and wear respirators? No. Should we wear masks in the future after the coronavirus blows over? Yes. Will we (we in this case being Americans)? Probably not.