Just a little bit of sanity for just a moment. Viral contamination is pretty simple stuff if you break down what you are really talking about, and what exposure you are talking about.
IF you are working in close contact in confined areas with an airborne contagion, you better be in a positive pressure suit with full body coverage, filtration, etc.
IF you are worried about something that is being passed through water droplets, (hmm sounds like airborne), then you have several options to LESSEN the impact.
IF everyone wears masks over their nose and mouth, and maintains distances of 6 feet or greater, the water vapor will likely (LIKELY) land on the ground before it gets to someone else in a well ventilated area. This is in no way going to stop anything 100 percent, but will simply lower the exposure rates significantly.
SO, why have some Asian countries had great successes with masks? Because they have minimized exposure, not eliminated it. This is because the cloth/cotton/etc., masks stop a good portion of the water vapor from individuals.
So are cloth masks effective at stopping the virus in a medical environment? They are not ideally suited. You would want goggles and better filtration than a simple cloth mask, as well as gloves, sterilization, full body coverage etc. I seriously doubt the medical community is ready for, or equipped to work in a viral hot zone. They simply lack the experience and training, as well as the equipment to be able to do it effectively in a non laboratory environment. This puts this community in a serious risk just to work.
If you look for data that is not hype and has something that resembles actual science behind it, this is a very interesting virus. It has long term effects that we are not fully aware of yet, and it is not just an old people killer. True, it gets progressively more nasty as you get above 55 years of age, but it is still something to take serious for younger people.
BOTTOM LINE, if you wear a mask, you will lower exposure rates at worst, or not be exposed at best. If you get exposed you want the least viral load to be exposed to as it will lessen the impact of your illness.
MAKE A CHOICE
ULDieter