But if vaccine X is “90% effective”, what about that leftover 10%? They could be walking around thinking they’re “protected” and end up a breakthrough case, and get it and spread it, even though they have the imprimatur of being “fully vaccinated” and allowed to walk around unmasked.
So those situations aren’t all that different. Whether you got the bug and think you’re immune, or got the vax and think you’re immune, it’s the same thing.
Based upon my experience with my second Moderna I will be waiting as long as I feel I can before getting any additional shots.
From what I have read & been told by Medical Professionals I know… noboby really knows the real absolute truth yet about these infection, re-infection speculations regarding vaccinated & unvaccinated people who have already had CV.
Apparently both can be infected & re-infected with CV. But each group should have a milder case if re-infected.
Both catagories can spread the CV if re-infected… whether they know they have it or not.
There are no firm & fast rules that apply & can be considered fact at this point.
Time will tell, much is still unknown.
I’m no infectious disease expert or epidemiologist, but it seems to me that, in calculating the probability that you’re going to get significantly ill from Covid-19, you need to look at both the probability that you’ll get infected, and the probability that getting infected will give you serious illness. Looking at both of those factors, it seems to me that being vaccinated provides a longer protection, even if you’ve already been infected with SARS-Covid-2. The reasons for that are that the protective effect from the vaccination in boosting your antibodies to the virus seems to last longer than the protective effect of contracting the virus, and also the probability that you will get seriously ill if you contract the virus and are vaccinated is very low, because the vaccines are very effective at preventing serious illness. In addition, recent scientific reports on studies of health care front-line workers indicate that the mRNA vaccines also seem to significantly lower the risk of being infected with the virus in the first place (link to reports not posted due to forum rules).
I received the J&J in March.
I think I want a booster.
I am in NM like jon_slider and couldn’t get one right now by any legal means.
Part of me is skeptical about Pfizer’s declaration. They do have a financial interest in selling more vaccines and if the CDC stated it was a good thing to do they would have millions of people here in the US lining up to get a booster. Part of me wants to believe they also might also want to benefit the general public health.
Careful, friends, we’re treading on dangerous ground. Remember; personal experience— not personal opinion, not recent hearsay. Not that those are necessarily bad but they almost always escalate into something more.
As I wrote before, I took my first Pfizer shot last friday. Only had slight pain in the arm, put some ice several times in the same day and didn’t have any other symptoms besides that. So far so good. 
Also, some data from my country: in almost 3.000.000 people with the vaccination complete, only 3.850 got infected. This is 0,1% of the vaccinated people (not the country’s population). This proves that the vaccines are not 100% effective, but I guess it proves more that without them the scenario would be far worse. I haven’t searched about how many of those 3580 people had severe symptoms or needed to go to hospital.
70% of the adult population here has taken at least 1 shot.
Keep safe folks
Part of me knows that if money wasnt involved, they would be doing something else. Greed is the motivation for almost everything now.
Yep… sad but true.
To get to the bottom of anything just about, Follow the money… ALWAYS FOLLOW THE MONEY. 
I heard this on today's news...
The number COVID-19 cases in the U.S. have doubled in the past week.
I thought the U.S. was doing pretty well, but apparently not. 
EDIT:
I heard this on the CBS Evening News.
I have since heard a totally different statistic that makes me doubt what I originally heard.
On another network, they reported that the number of COVID-19 cases in the U.S. have doubled in the past three weeks.
This sounds more likely to me.
Sorry for the confusion.
Personal experience
I had one shot of J&J in March
I contacted the Health Department to request a booster.
I also asked my doctor.
They both said no, because CDC has not authorized boosters yet.
I insisted, the Health Department said I could get an Antibody test, and IF the values are low, they will authorize a booster.
Contacted my doctor, requested the Antibody test… Doctor says, that will be $150 out of pocket. I say no thanks and call the Health Department back. They agree with my doctor, I must pay for the antibody test myself, and Maybe if I dont have antibodies after 4 months from a single shot, they Might authorize a booster.
Basically, no, I cannot have a second shot, because J&J is a one shot vaccine.
Ive been reading online that people in other places are going in for a second shot after a J&J. I dont know how they are pulling it off. The system here is preventing me from getting a second dose.
The Health Department told me to read the J&J site, which will supposedly reassure me that I dont need a booster, or second shot. Meanwhile CDC is considering when to authorize second shots for J&J vaccinated people. I hope that CDC will offer me a second shot.
I would have liked to know if I have antibodies but am not prepared to pay the $150 to find out.
Everywhere I go, people have stopped wearing masks… I worry about the Delta spreading, and want a second shot.
I remember when I was trying to get vaccinated, I actually wanted the J&J because it was just one shot.
My mom tried to find me the J&J, but couldn't.
Instead I got the Moderna, and I feel very lucky that I did.
(Both the Moderna and Pfizer are the gold standard right now.)
I think that the CDC will eventually tell those that got the J&J to be a booster of one of the others, but they're waiting for more data to come in. 
<-- That's a Corona beer by the way.
Hey, you’re clean and sober, remember?
Yeah, but I remember how refreshing a nice cold beer is, and I like the beer emoji. 
From preliminary data it seems that the Johnson vaccin is less good than Pfizer and Moderna in protecting you from contracting the delta variant and stop you spreading it, but that it does protect you very well from getting severe COVID and from death. So in the general interest of stopping the virus going around society a booster after the J&J vaccin could be a clever idea.
But of course Pfizer wants to earn money too.
I just thought of something...
Instead of having no spectators at most events of the 2020 Tokyo Olympics, why not require proof of vaccination and just have those people be the spectators?
It's been done for other (non-Olympic) events, and that way there are some spectators. 
...
EDIT:
Here's an answer to my own question.
Japan is less than 30% fully vaccinated, so that make things tougher.
(They lag behind the U.S. in vaccinations, as a whole.)
My personal experience with covid is that I hope the non vaccinated come to their frigging senses and get the vaccine before the world gets shut down again. Come on man. It’s free and it’s safe.
Well said JaredM… :+1: This is my personal experience also.
Did you hear what the Governor of Alabama had to say?
She didn't mince words either.