I watched an interview of a virologist who broke it down into something quite simple and easy to understand ::
Viruses need a vehicle to travel in. By and large it is body fluids such as saliva that offer that vehicle. If you can arrest the spray from someone talking, coughing or sneezing, you stand a very good chance of stopping that virus from being spread. Simply said, viruses are hitchhikers and cannot travel on their own and do not easily separate from their host.
Basically in a nutshell, even wearing a bandana will help arrest the spreading of any virus or bacteria by simply trapping your spit. Does your mask do a great job of protecting you? Not really, but it is something. By wearing a mask, you’re doing more to protect others than you are yourself.
Yes, there are other things to think about too such as hygiene and how to clean and disinfect your PPE - BUT we have to start somewhere. It’s easy - just wear the mask when you are in areas where you can’t maintain reasonable distance from others..
I think as a quick demonstration of why a 'real' mask is better than one produced from random fabric, the video is valid. Also valid is the reasoning & powder demonstration of how droplets behave in the air.
Sadly you do need to dumb down to communicate with a lot of the public, on both sides of the pond.
It appears the majority of deaths occurred when we were locked down. Unfortunately, the majority of these fatalities occurred in nursing homes and could have been avoided if proper precautions were taken. It appears we are doing much better. Mask wearing? Social distancing? Washing our hands? Protecting the most vulnerable? Let us hope the worst is behind us.
Daily test results in Chester County PA. While the number of overall tests has increased substantially. The number of positive tests has remained constant (dark blue). Negative tests are in light blue. Positive tests are consistent with the numbers in April during full lockdown here. You can't read too much into the lower recent positive numbers from the last few days due to the data always being updated slightly. The biggest obvious "spike" is the number of negative tests or testing in general.
Daily Deaths have decreased by a substantial amount in Chester County PA. PA continues to have some of the strongest restrictions in the country. The majority of deaths occurred here during the most restrictive phase of the COVID lockdowns.