Why are some people immune?

[user1488819536]

My toddler and I both caught covid from my work colleague. My husband tested negative. He then re tested at the end of isolation and he was still negative ( 2 weeks later)
We shared the house, rooms, car etc.
Does anyone know why some people dont get it?

Oils*

Covid isn't a bacterial infection.

DH had it. Not coughing but lost smell:taste and had 2 days of feeling crap. I was pregnant and taking Vit D at the time.. . I had a negative anti body test around 3 months later.

The main reason is Covid is it actually that infectious. The spousal transmission rate, for example, is only about 50%. This does not however negate the need for precautions etc because obviously it is still infectious enough to be societally problematic!

I think it's possible to have it and still not have antibodies. I know somebody who had a positive swab, was really quite unwell (I'm hospital), was tested privately later on, but was antibody negative.
So I suppose nobody really knows if they have had it or not, unless had symptoms and tested positive.

@PickAChew

We are being advised to "clean surfaces" "wash hands" and I have done some personal research too - I didnt fully claim thats what stopped me getting covid, Im saying it has possibly helped and I might be in nursing but I also dont believe every single medication given is good for you. The more natural stuff the better. We dont know everything about covid yet either and the information keeps changing. To be honest I am bloody sick of the whole thing and a hell of a lot of it is so contradictory.

I loved nursing to help people in a time of need and learn about the body and what it can go through but its not like that these days, full of politics and false nasty people.

I will be leaving it as soon as I can get something else, someone left to honestly stack shelves in aldi and are happier!

I'm (probably) immune to flu. Never had it. Surrounded by people who have had it bad and cared for them and nothing.

Or do I get it and am asymptomatic? Who knows?

@DontStopThinkingAboutTomorrow that’s really interesting. I had a private blood test antibody test as I was convinced I had also had it. As was really fatigued and slight temp around same week as DH. Just not enough to have a test at the time. Was only a few weeks/months after that I thought I must have had it and so booked the test.

I feel like I had something with similar symptoms to COVID 19 after a trip to Thailand in December 2018. My husband feels he had COVID earlier this year but was not tested. My daughter tested positive a few weeks ago both times I was fine, not sure it it’s related.

Unless I was asymptotic, who knows.

According to the Daily Mail, dark chocolate is a prophylactic. Unfortunately, I prefer milk.

I have a genetic mutation that gives me resistance to Norovirus... there's possibly one for Covid resistance

@UpTheLaganInABubble

Thats like a gift!? Lucky! Im terrified of Noro... how did you even find that out... goes on google

@ThisShitDontMatter It's definitely handy I had genetic testing done years ago because of health issues and this was something that was mentioned, it's the FUT2 gene as far as I remember. It made sense... my family always said I'd a 'stomach of steel' as I never got stomach bugs!

My eldest son never catches anything . I can’t even remember the last time he had a cold. He’s 22 now and probably had a temperature twice in his life. My younger two get a cold every few years. I’ve no idea why, they don’t eat particularly healthily. I assume it’s largely genetic.

@UpTheLaganInABubble

Thanks for getting back to me. Im so impressed lol (and jealous!)

Interesting to read about the Neanderthal gene and possible links with coronavirus. It would actually make some sense to me.

I had COVID very badly (March/April time). A few years back I did one of those ancestry/genetics tests and it came back with various findings including percentage of Neanderthal gene. My percentage, although small, came out very high within the range that it's found in modern day, western humans. It just makes me wonder.....

FYI some essential oils can kill coronavirus and have been used for years: www.google.co.uk/amp/s/news.sky.com/story/amp/coronavirus-uk-troops-given-insect-repellent-citriodiol-as-part-of-enhanced-protection-11978318

I've not had it yet and I have been dealing with covid residents personal care for weeks and in with them for long amounts of time. Wearing full ppe tho and I'm tested weekly

T cells.

www.bmj.com/content/370/bmj.m3563

The bcg thing is interesting but i would have thought most people, between certain ages, in U.K. at least, have had it? So not sure how that works out.

I have no idea if I am immune to Covid 19 (I don't think I've had it, but of course I could have done), but I have a pretty good immune system generally and have only ever had flu once - and that was nearly 50 years ago.

There's something called the Eyam gene whereby a number of those with ancestors who survived the Black Plague in Eyam rarely get ill. I believe it's been used in gene therapy for hiv with success in 1 (or now 2?) cases, and the man no longer has hiv.

Some people are just immune.

www.bbc.com/news/uk-england-derbyshire-51904810

If I remember correctly, some people have immunity if they have had similar coronaviruses (colds) in the past.

That idea has been tested and no evidence found. It's unlikely because none of the other 4 human Coronaviruses provide immunity to each other.

T cells.

That's the proposed mechanism. Even that linked article makes clear it's entirely speculative- if it were a substantial factor, we have found evidence by now.