How likely to catch covid from child after one Pfizer vaccine?

[TheVolturi]

Dc tested positive today, has what seems like a bad cold but fine apart from that. I have only had one Pfizer vaccine 3 weeks ago. Getting a bit worried that I am going to be very unwell!
We are keeping all windows open and dc is spending time in bedroom unless having fresh air in the garden, but at 7 it's too young to fully isolate!

At 3 weeks post vaccination, you stand a good chance of having milder symptoms if you were to catch it from your dc, as it doesn’t stop you catching it. Plus you could have it and have no symptoms at all. Good luck, I hope you all stay safe.

I’m sure it’s 21 days post vaccine for maximum efficiency.

Are you particularly vulnerable.

A single dose is estimated to be 85% effective which means you are unlikely to catch it. There is also evidence that it reduces the impact of Covid if you did catch it so you are very unlikely to become seriously ill. 3 weeks is also the optimum time for the vaccine to become effective

I had my first AZ vacc end of Feb and d's caught covid just before the Easter holidays. None of us caught it off him, well if we did we didn't have any symptoms

My friend caught Covid from her child 10 weeks post-Pfizer. She did feel very unwell for a few days - basically flu - but was fine a week later with no lasting effects other than the normal post-viral tiredness. No breathing problems. She does have an auto-immune condition which might mean the vaccine didn't work too well for her - no way of knowing now.

At three weeks post-jab you should have a good level of immunity and are unlikely to be seriously ill.

0% protection against catching the virus - Your adaptive immune system CANNOT prevent you from becoming infected!

Probably 60-80% less risk of developing symptoms.

Probably 90-95% less likely to end up in hospital.

Following this with interest - does it make a difference if it’s the Indian variant? Hope you stay symptom-free, OP.

My son tested positive just 9 days after we were vaccinated with Pfizer. Nobody else in the house caught it (not saying this is due to the vaccine but who knows?!) and we were with him all day, every day. We did LFT virtually every day during our isolation period and remained negative.

Yes I caught it after 1 vaccine but I wasn’t very unwell. Mild symptoms but you still have to isolate.

Thank you everyone. I am not vulnerable, I am 40 and quite healthy, I am a healthy weight and I run regularly. Just don't know what to do about keeping him slightly separate. His older brother has autism and usually needs me in the night as he doesn't sleep, and they share a room. Asd ds does not like sleeping in my bed so I don't know what to do about tonight for sleeping arrangements!

100% possible. Having both vaccines and it's 100% possible. The vaccine just stops you having it so you bad you need hospitalisation.

@strangeshapedpotato I’m sorry that’s absolute rubbish. Do you have any idea of how the immune system works?

Say you end up with some of the virus on your nasal mucosa (do you your nose), in many cases your immune system will recognise the antigen quickly and eliminate the virus quickly through the antibodies you’ve already built up with the vaccine and other associated immune cells. Therefore you do not become infected.
If you don’t have enough or if you’re exposed to too much virus at once, your immune system could be overwhelmed and you could have symptoms or become ill.

@TheVolturi

Thank you everyone. I am not vulnerable, I am 40 and quite healthy, I am a healthy weight and I run regularly. Just don't know what to do about keeping him slightly separate. His older brother has autism and usually needs me in the night as he doesn't sleep, and they share a room. Asd ds does not like sleeping in my bed so I don't know what to do about tonight for sleeping arrangements!

@TheVolturi

You’re all in the same house and at 7, I think that’s too young to not be around him if he’s unwell.

You’re vaccinated and not vulnerable, in your position I wouldn’t be isolating from my sick child.

I tend to agree with backijack, we didn't isolate at all from ds (9) when he had it and neither of us had been vaccinated at time. We didn't catch it off him (similar age to you and not vulnerable) which was lucky but shows it's not a given you'd catch even if you hadn't been vaccinated

[quote underneaththeash]@strangeshapedpotato I’m sorry that’s absolute rubbish. Do you have any idea of how the immune system works?

Say you end up with some of the virus on your nasal mucosa (do you your nose), in many cases your immune system will recognise the antigen quickly and eliminate the virus quickly through the antibodies you’ve already built up with the vaccine and other associated immune cells. Therefore you do not become infected.
If you don’t have enough or if you’re exposed to too much virus at once, your immune system could be overwhelmed and you could have symptoms or become ill.[/quote]
If your immune system is neutralising the virus, you're infected! It doesn't act outside of the body!

I think you're confusing the roles of the innate immune system and the adaptive.

Your final para is just nonsense - whether or not you have symptoms is down to FAR more than the initial viral load and your antibody count has nothing to do with it either!

@underneaththeash

I'll add if you actually read the published efficacy results for any vaccine, they always state the reduction of "symptomatic infection" as the headline figure.

The press often report this simply (and incorrectly) as "infection", which is no doubt where you're getting your misunderstanding from.

3 weeks is enough to get a decent protection from Pfizer for hospitalisation and death. Protection after only 3 weeks from being infected may be lower if the child has the India or south African variant. It the Kent variant or Brazilian then you have a good chance of protection. However not 100% obviously no matter what variant.

The fact the child is under 9/10 should also mean if they have the virus they are less likely to transmit it as much. Just keep good hygiene. Just don't share things he uses and wash your hands a lot extra. After that what will be will be. Good luck ❤

Current understanding is that one dose is only 30% effective against the Indian variant.

To be honest I just think it's down to how good or otherwise your immune system is

My teen caught it and was surprisingly very unwell with it .. being so Ill I didn't get isolate him. We snuggled in the couch under a blanket.

I never got it..or if I did I was asymptomatic.
That was before the vaccine was around

@anniegun

A single dose is estimated to be 85% effective which means you are unlikely to catch it. There is also evidence that it reduces the impact of Covid if you did catch it so you are very unlikely to become seriously ill. 3 weeks is also the optimum time for the vaccine to become effective

It's been shown that a single dose is only around 33% effective against the Indian variant though (which is apparently now the dominant strain).

You'd hope it would still help to reduce symptoms though.

Regardless, I don't think I would banish my child to their bedroom!

I am not isolating him or isolating from him, but I was wondering about how sensible it would be to sleep in the same room as him, if it could be avoided. The reality of it is if several of us in the house catch it at 5-10/day intervals we could be stuck at home forever 🤣

@TheVolturi

I am not isolating him or isolating from him, but I was wondering about how sensible it would be to sleep in the same room as him, if it could be avoided. The reality of it is if several of us in the house catch it at 5-10/day intervals we could be stuck at home forever 🤣

If you can avoid sleeping int he same room you may as well, same with cleaning the bathroom after he uses it and keeping well ventilated etc.

You may as well try not to catch it.

My friend tested positive a week after second jab but was only mildly unwell. She likely caught it from someone who had had first jab

Yes this is what I'm thinking. And hopefully it will be enough, but he has been sharing everything and in very close contact with us all up to now so it may be too late! Just hoping the vaccine will have given me protection. Dh is diabetic but is fully vaccinated and does not usually have as much close contact with him as me, plus is working most days.

My brother caught Covid about 6 weeks post 1st Pfizer. Sorry to say he felt really poorly but he did manage at home. Also, he is a doctor so was probably exposed to a high viral load at the hospital. Also, given how rubbish he felt, we did wonder if it would have been much worse if he hadn't had that Pfizer. I'd try to distance from your boy as much as poss but if you do get it, the Pfizer will hopefully help a lot.