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littlemissmartypants

(22,628 posts)
70. Thanks for this. ❤ What the Immune System Does Between the First and Second Dose
Sun Apr 25, 2021, 01:14 PM
Apr 2021

From the article. . .
WHY MRNA VACCINES NEED TWO DOSES TO BEST WORK – AND WHAT DELAYS MIGHT MEAN
Sub Header:
What the Immune System Does Between the First and Second Dose:


The biology through which the mRNA vaccines induce their protection from COVID-19 is fundamentally different from that with other vaccines.

Pfizer and Moderna vaccines use messenger RNA that encodes the spike glycoprotein. Upon injection of the vaccine, the mRNA enters into immune cells called dendritic cells. The dendritic cells use the instructions written in the mRNA to synthesize the hallmark spike glycoprotein, which characterizes the SARS-CoV-2 virus that causes COVID-19. These immune cells then show the spike glycoprotein to B-cells, which then make anti-spike antibodies.

Dendritic cells recognize viruses and present information about the spike protein to T-cells. T-cells provide information about the viral spike protein to B-cells, which are transformed to memory B-cells that store information about the virus. When this memory B-cell is activated with an infection or the second dose of the vaccine, this causes some of the B-cells to change into plasma B-cells that secrete protective antibodies that fight the virus.

The mRNA vaccines are uniquely capable of inducing a special kind of immune cell – called a T-follicular helper cell – to help B-cells produce antibodies. The T-cells do this through direct contact with the B-cells and by sending chemical signals that tell the B-cells to produce antibodies. It is this help in antibody production that makes these vaccines so effective.

More...

https://news.virginia.edu/content/why-mrna-vaccines-need-two-doses-best-work-and-what-delays-might-mean

I had my first Moderna. I was sick for four days with fatigue, nausea, muscle and join pain with a sore arm, shoulder. I'd do it again a hundred times if I could help my family, friends and neighbors fight getting Covid.


(I was also brought up in a family that believes it is rude to talk about one's medical issues in so called "polite company" but here we are...)

Thanks for sharing the article, dalton99a.


Ugh. I know 3 people who had side effects after #2; none bad at all. oldsoftie Apr 2021 #1
I had side effects, friends and family members had side effects. No one I've Arkansas Granny Apr 2021 #5
Same Here Roy Rolling Apr 2021 #33
Cowards.... Claire Oh Nette Apr 2021 #64
Being tired and napping plus xxqqqzme Apr 2021 #120
I had none after first shot, was a bit sleepy from second shot. No other side effects (Pfizer). tblue37 Apr 2021 #60
Same here Mosby Apr 2021 #99
I got slammed for days after my second shot obamanut2012 Apr 2021 #82
I felt like dog crap after the second shot Thtwudbeme Apr 2021 #127
My first shot was hellish. intheflow Apr 2021 #19
The folks I know who had issues after the 1st had none after the 2nd. Hope thats you! oldsoftie Apr 2021 #27
Not true obamanut2012 Apr 2021 #83
It was true for the ones I know. I'm simply hoping the same for that poster. oldsoftie Apr 2021 #110
Its possible you've fought off asymptomatic COVID, or had it lambchopp59 Apr 2021 #35
Did you read my post or just the header? intheflow Apr 2021 #46
Just encouragement. lambchopp59 Apr 2021 #49
Okay, then. Thanks! n/t intheflow Apr 2021 #50
Had effects from shot 2 of Pfizer Retired Engineer Bob Apr 2021 #116
Well said, "Sure beat getting an intubation tube shoved down my throat" Stuart G Apr 2021 #117
Yup,better a couple days of lethargy now than alot worse BUT onetexan Apr 2021 #121
Come on, people. Please don't make this worse for all of us soothsayer Apr 2021 #2
Have I Mentioned Lately How I Hate Americans & Humans In General? SoCalDavidS Apr 2021 #3
I avoid people, too pandr32 Apr 2021 #36
I hear ya - but I hate right-wingers SuperCoder Apr 2021 #45
+1... IthinkThereforeIAM Apr 2021 #88
I thought I was the only one...lol appalachiablue Apr 2021 #47
Rolf, i've always hated em'. miyazaki Apr 2021 #93
I'm getting that way, especially after about 80 million voted for an ass like Trump. Makes me wonder RKP5637 Apr 2021 #98
Most of the people I know BigmanPigman Apr 2021 #101
Millions Are Stupid. But, We Knew That Already. MineralMan Apr 2021 #4
My dad used to sing a little one line exasperation ditty: "Oh the world is full of idiots"... Hekate Apr 2021 #73
It's difficult not to recognize that as a fact. MineralMan Apr 2021 #75
What a caring Christian society we live in where having an NoMoreRepugs Apr 2021 #6
when I think about what my mum and her family went through in WWII in England Skittles Apr 2021 #96
Exactly. My Dad, FIL, every uncle served in WW2 - nobody got drafted, volunteered. NoMoreRepugs Apr 2021 #105
Indeed Retired Engineer Bob Apr 2021 #118
And think about turning in used cooking oil, used rubber, no butter, etc oldsoftie Apr 2021 #126
Amazing how our species demonstrates their stupidity and ignorance on a daily basis. NewHendoLib Apr 2021 #7
Because Facebook and Instagram are full of videos of side effects.... Jon King Apr 2021 #8
Facebook has no standing or any principles of not posting that stuff turbinetree Apr 2021 #67
Some young people are posting pretty severe side effects on TicToc womanofthehills Apr 2021 #128
Severe side effects are severely over-reported in social media and word of mouth dalton99a Apr 2021 #9
Well that is true everything from police shootings cinematicdiversions Apr 2021 #23
Of course. Those who have mild or no side effects usually don't post JohnSJ Apr 2021 #39
One problem is drama queens who exaggerate how "sick" they were ...... groundloop Apr 2021 #10
There ya go. In a nutshell. oldsoftie Apr 2021 #29
Some people also blame all kind of shit on vaccines, when in reality, LisaL Apr 2021 #104
"Others said they felt that they were sufficiently protected with a single shot." marmar Apr 2021 #11
Apparently we have many brilliant immunologists that self diagnose. RKP5637 Apr 2021 #17
A single shot is not enough. A shot and a beer, that'll work. nt (kidding - had two moderna) JustABozoOnThisBus Apr 2021 #92
Media did huge disservice saying 80% effective after one shot. Pobeka Apr 2021 #12
Multiple doses have been a feature of polio immunization, and measles, I think. So there's ancianita Apr 2021 #24
That's what happens... paleotn Apr 2021 #41
There is scientific disagreement on this. former9thward Apr 2021 #103
There is *no* data to disagree on. There is no single dose trial for Moderna or Pfizer. Pobeka Apr 2021 #106
The death rates in the UK have gone down faster than the U.S. former9thward Apr 2021 #108
Yes. I consider that no data. Pobeka Apr 2021 #109
The question of whether it makes more sense to get everyone their first shot first Hugh_Lebowski Apr 2021 #122
When people have to stand in lines there is scarcity. former9thward Apr 2021 #124
Yes I know that. I'm not saying there's not. Hugh_Lebowski Apr 2021 #125
2 days after receiving his 1st Moderna shot my husband was in great pain. marie999 Apr 2021 #13
I had 2 weeks of symptoms after 2nd shot. I would do it again. It's the right thing to do. Biophilic Apr 2021 #14
IOW: ignorance - with a bit of laziness mixed in. n/t CousinIT Apr 2021 #15
I really had no reaction at all to the 2nd shot. I was expecting something and nothing happened. nt RKP5637 Apr 2021 #16
I had no reaction to either shot. Haggard Celine Apr 2021 #66
Yeah, quite true!!! n/t RKP5637 Apr 2021 #81
Same here Random Boomer Apr 2021 #91
Some have a really bad reaction. When I was at the large site for the 2nd shot one of the RKP5637 Apr 2021 #97
I had the J and J version, so I am one of those skipping the 2nd shot MichMan Apr 2021 #18
You're not "skipping the second shot." intheflow Apr 2021 #20
LOL. JohnSJ Apr 2021 #44
I didn't expect it to affect my sex life like it did MichMan Apr 2021 #48
You're cracking me up. I suspect your first post in this subthread was sarcasm JohnSJ Apr 2021 #52
When the nurse asks "which arm?" ... JustABozoOnThisBus Apr 2021 #95
I had mild side effects after shot #2, but figured it was better than dying PatrickforB Apr 2021 #21
Who cares. They're pretty good at above 70%, better than many flu shots I've had over the years. Let truthisfreedom Apr 2021 #22
Good point, recent data says at least 50% effective longer term after one dose only... Jon King Apr 2021 #26
One dose of either Pfizer or Moderna didn't produce a lot of antibodies. LisaL Apr 2021 #32
+1. It took two doses to demonstrate strong antibody AND memory B cell responses dalton99a Apr 2021 #53
Thanks for posting, very informative. NT SWBTATTReg Apr 2021 #69
Thanks for this. ❤ What the Immune System Does Between the First and Second Dose littlemissmartypants Apr 2021 #70
The devil is in the details, isn't it? intrepidity Apr 2021 #100
People that actually want this to end. ForgoTheConsequence Apr 2021 #42
Well, it's possible that I'm in that number. piddyprints Apr 2021 #25
I had Moderna twice gopiscrap Apr 2021 #28
Me too MiniMe Apr 2021 #87
Social media is the BIGGEST problem bluestarone Apr 2021 #30
yup and they compound each other lookyhereyou Apr 2021 #63
Yeppers! bluestarone Apr 2021 #84
While 5 million is a big number there have been over Phoenix61 Apr 2021 #31
Had my second shot... mbusby Apr 2021 #34
I had flames on the side of my face. Politicub Apr 2021 #40
I considered the possibility of postponing my 2nd shot GreenEyedLefty Apr 2021 #37
The side effects have been overblown. It's rather stupid, really. Politicub Apr 2021 #38
Every-night local news leads with someone who had some mild side effect. ForgoTheConsequence Apr 2021 #43
And in print - a random example: dalton99a Apr 2021 #59
God that's irresponsible. ForgoTheConsequence Apr 2021 #115
Can so many Americans get any stupider? I blame it on 4 years of trump. brush Apr 2021 #111
We deserve Traildogbob Apr 2021 #51
Enjoy the ventilators. SuperCoder Apr 2021 #54
I got no side effects from either of my 2 Pfizer shots. SunSeeker Apr 2021 #55
However, having the 2nd shot more than 4 weeks after is going fine in Canada and UK muriel_volestrangler Apr 2021 #56
This is why I'll be wearing a mask well into the future, maybe forever, out in public. -nt CrispyQ Apr 2021 #57
I hope there are other reasons - maybe some "good" ones. BobTheSubgenius Apr 2021 #58
I've had both shots. The Pfizer variety. Mr. Evil Apr 2021 #61
Well, that leaves more for the third world peppertree Apr 2021 #62
I got my first shot about 24 hours ago .. Moderna. SarcasticSatyr Apr 2021 #65
I REALLY ENJOYED my side effects - first shot made me sleepy and I slept REALLY WELL for Kashkakat v.2.0 Apr 2021 #68
Millions are dumber than dirt IronLionZion Apr 2021 #71
Fox News and the GOP are feeding into these dumb fucks misinformation Botany Apr 2021 #72
Bring on the one-dose, asap Hekate Apr 2021 #74
Fear ffr Apr 2021 #76
Oh FFS Yo_Mama_Been_Loggin Apr 2021 #77
Side effects sure beat a ventilator. HUAJIAO Apr 2021 #78
A large part of the problem seems to be scheduling and supply EleanorR Apr 2021 #79
Bureaucracy likely getting in the way Warpy Apr 2021 #80
Yea and when they get COVID, they will blame it on the bluestarone Apr 2021 #85
Putin is loving it. His Social Media Disinformation Campaign is working. Tommymac Apr 2021 #86
If only we could go back to 1918 and ask the victims of the flu epidemic FakeNoose Apr 2021 #89
I stole this idea . . . AverageOldGuy Apr 2021 #90
My gf couldn't take her 2cd vaccination because of the adverse reaction she had to the first one. olddad65 Apr 2021 #94
I get my 2nd tomorrow at 12:30 Pas-de-Calais Apr 2021 #102
Bad move. orangecrush Apr 2021 #107
While a number are probably out of fear, many out of laziness, I am more sympathetic than artemisia1 Apr 2021 #112
My parents and I had our first shot at Walgreens today. Nurse said this was the big issue. nt Akoto Apr 2021 #113
What a bunch of dumbasses.... OhioChick Apr 2021 #114
I felt pretty crappy after Moderna shot #2, but I was relieved Rhiannon12866 Apr 2021 #119
We are going to be dealing with covid for years to come inwiththenew Apr 2021 #123
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