The virus is in the population. It is not going to "die out" no matter what measures you take. Just like all the other flu viruses and corona viruses out there. It will be here next year. If three weeks would solve Covid-19, why not ALL corona virus "colds" or ALL viruses that cause flu as well? Do all we have to do to get rid of cold and flu season forever is wear masks now for three weeks?
The value of masks as a community mitigation (As opposed to personal protection.) is trying to keep transmission down while we're wearing them to keep exponential growth from happening that will overwhelm the hospitals. It will also extend the time we have before more of the population is infected before effective treatments, prevention by vaccine or herd immunity occurs. While there are no effective treatments for the virus at this time, the main issue that causes death in populations other than the most vulnerable (Co-morbidity of age and some other factor like diabetes, heart disease etc.) is the cytokine storm. The steroid they're using for that now seems to be cheap and effective and has the additional benefit of not having the president tell people it works.
If the main reason left to wearing a mask is the protection of the vulnerable population (Which I am in by age, but might not have a co-morbidity--unless this vaping is a bad thing.) until we get a vaccine, I again ask, why would we not do this every year during cold and flu season? The vulnerable will still be as vulnerable and the risk will still be out there from either Covid-19 or some other nastie.
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In today's Wall Street Journal an opinion piece ("Covid Was a Punch in the Mouth") alleges the CDC just changed their website on the topic:
A sensible and authoritative warning recently disappeared from the CDC website: "In the coming months, most of the U.S. population will be exposed to this virus."
Does anyone know why the change was made?
(If you search for the exact phrase, you see the Marin County Health and Human Services FAQ page still use it.
Frequently Asked Questions | Marin County Coronavirus Information )