I fail to see your logic between being vaxed and the spread of covid? I see nothing on how any vaccination has lessened the spread of
covid, only the "maybe" that one will not get a serious case, and even that is iffy.
I’m returning to your question, daniel . I apparently failed failed to adequately answer your question. I’m sharing this short article from the NYT, which does a better job (and also explains why masks are so important). I hope you find it helpful.
I’m Vaccinated. When Should I Wear a Mask?
by Noah Pisner, Reporting on the coronavirus
If you’re fully vaccinated and become infected with Covid-19, you most likely won’t get very sick. But you might spread the coronavirus to immunocompromised and unvaccinated people.
Here’s what to keep in mind →
The C.D.C. recommends that you wear a mask in high-risk circumstances, whether you’re vaccinated or not. Masks are highly effective at stopping transmission.
So, why are Covid vaccines effective at preventing you from getting severely sick, but not as good at stopping transmission of the virus?
The vaccines are injected deep into your arm where they prompt your immune system to produce T cells and powerful antibodies known as IgG.
These antibodies and immune cells circulate through your body, recognizing infected cells. This can offer enough protection to keep you from becoming severely ill.
But IgG antibodies have a hard time reaching the wet, squishy surfaces of your nose, mouth, respiratory tract and digestive system. These areas rely on a different immune response that involves antibodies known as IgA.
New research suggests that current vaccines aren’t as good at eliciting a strong IgA response in your nose and mouth. If you’re vaccinated, IgG antibodies and T cells will prevent you from becoming seriously ill. But the virus can still bloom in your nose.
The Delta variant is especially contagious. The vaccines will still prevent serious illness if you become infected, but Delta replicates much faster than other variants, increasing the chances that you will transmit the virus from your nose and mouth.
Scientists are testing nose spray vaccinesthat might help IgA production — but they won’t be ready for a while.
In the meantime, masks are a simple and effective way to curb transmission.
NYT 16 September 2021