Why Some Who Are Vaccinated Still Get Coronavirus

[Yo_Mama_Been_Loggin]

The scattered reports from around the country can play like a cruel irony: Someone tests positive for the coronavirus even though they have already received one or both doses of a Covid-19 vaccine.

-snip-

How can that happen?

Experts say cases like these are not surprising and do not indicate that there was something wrong with the vaccines or how they were administered. Here is why.

■ Vaccines don’t work instantly. It takes a few weeks for the body to build up immunity after receiving a dose. And the vaccines now in use in the U.S., from Pfizer-BioNTech and Moderna, both require a second shot a few weeks after the first to reach full effectiveness.

■ Nor do they work retroactively. You can already be infected and not know it when you get the vaccine — even if you recently tested negative. That infection can continue to develop after you get the shot but before its protection fully takes hold, and then show up in a positive test result.

-more-

https://www.msn.com/en-us/health/medical/why-some-who-are-vaccinated-still-get-coronavirus/ar-BB1dgv1O?li=BBnb7Kz

[Jeebo]

1. They're also less than 100 percent effective.

If they claim a vaccine is 95 percent effective, that means there is still a five percent chance you're going to get it. That's still a lot of people, one in 20. Isn't that what "95 percent effective" means?

-- Ron

[unblock]

2. it doesn't mean 5% *will* get it, because it isn't the case that 100% get it without the vaccine

95% effective means that you're only 5% as likely to get it compared to your probability of getting it without the vaccine.

So if you're in an environment where you're 60% likely to get it without a vaccine, then your probability of getting it with the vaccine are 3%.


That said, once a lot of people get it, the number of active cases should drop a lot, so your probability of getting it without the vaccine might drop from 60% to only 6%, and your probability of getting it with the vaccine might go to 0.3%.

[stopdiggin]

4. yes. and 5%, looking for the OTHER diminishing 5%

that is still susceptible. Means you're a lot closer to turning the corner .. and an environment where most people can go about their business.

[stopdiggin]

3. Thanks. Yes, this is NOT unexpected

and it DOESN'T mean that the vaccines aren't working. Our best bet/hope is still to get as many people vaccinated -- at the earliest possible date!

Confusion, misinformation and anti-vac conspiracy will cost us lives. Full stop.
(Your folks were smart enough to get their kids vaccinated for polio, mumps ... Try being at least as smart, and as public spirited, as they were.)

[roamer65]

5. You can also develop a subclinical case even after you have been vaccinated.

It has been seen with others viruses and the vaccinated, like measles.

The virus will still try to take a run at you, but the antibodies will usually ward it off. You can still shed virus with the subclinical case and infected the unvaccinated.

[dawg day]

6. Getting mine next week...

And I'll continue to wear a mask until the incidence in my town is down to 5 per 100k... now at 59.

[applegrove]

7. They work on a gradient. It may take less or more time for the antibodies

from the vaccine to fight off and destroy the coronavirus. And variants of covid may change that timeframe of fighting off Covid for each vaccine You could test positive while you are fighting it off.