Why discard old masks and put on new masks in between each patient?
A Doctor doesn’t want to pass disease from one patient to the next, and a mask can easily do that.
Observe how everywhere mask wearing is pushed by authorities disease spreads faster.
When you wear a mask all day you are collecting bacteria from each person you meet and then exposing all subsequent people you meet to the bacteria you have collected. Breathing through the mask keeps it warm and moist so the bacteria can survive and thrive. Breathing and talking through the mask then expels those bacteria into the air, so that the person you are talking to can collect the bacteria also.
Interesting physics fact. Masks cannot stop viruses. Viruses are too small. If you created a mask that was tight enough to stop viruses you couldn’t breath with it on. In other words if a virus is present in the air around you, you can breath it in and you can breath it out right through the mask.
Why I don’t wear a mask:
I don’t want to spread disease to you that I may have been exposed to from people I interacted with before meeting you. Masks are one of the most efficient ways to spread disease. Your breath keeps it warm and moist, a great environment for passing on diseases.
Let’s look at the reports that tell us it is helpful to wear masks. In many cases these reports show that masks really don’t make much difference, even though their study conclusions state such things.
For instance a report that is sited by those encouraging mask wearing is https://www.healthaffairs.org/doi/10.1377/hlthaff.2020.00818
This report says that through their analysis they have shown that infections of Covid have gone down ever since governors made mandates about mask wearing. However as you read through the report you realize they made a lot of assumptions and tried to simultaneously test for many variables. Of course the more variables you introduce in to a system, the more the uncertainty grows.
This study claims that mask mandates cut down on corona virus infections. But even if we accept all their assumptions about masks it still only shows a 2 percent decline in cases in places where the masks were mandated. With that many variables any conclusions could easily be off by 2 percent. And it looks even worse when you look up the rates of disease in the United States {from the CDC} over the same time period. Over all the incidence of corona virus diagnosed went down about 7 percent for the whole of the United States. So the question becomes, “Did the mandates on masks keep the virus spreading faster than it otherwise would have?” Five percent? You see this study was done just after the peak of the influenza seasons as disease was naturally in free fall.
You need to keep putting your research materials in the real world setting to see if they really have meaning. The plain truth from the real world is that masks spread disease. Every doctor who switches out masks to keep from spreading disease form one patient to another knows it! Employees forced to wear masks for hours at a time while interacting with many customers can’t help but spread disease through the warm and moist environments of the masks they are wearing.
My advice is to stay away from anyone wearing a mask. You don’t know what diseases they may be carrying around in that warm cloth over their face.