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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To not want baby near unvaccinated toddler?

258 replies

victoriaspomge · 09/02/2026 21:53

So basically my partner wants his half brother's (same dad) younger half brother (same mum) to come and meet our baby.
He has a daughter who is 2 years old who he says is our kids cousin.

My partner is no relation to him or his daughter biologically but because they share a half brother he feels as if it's his brother as well and that they are family.

He dosent really know him and doesn't have his number and has only met him in the last 10 years.

They only hang out if it's with their mutual half brother.

I know the 'brother' is very anti vax and has not got his 2 year old vaccinated despite living in a city where it has had a lot of cases of measles.

Baby is too young to be have the MMR and I am extremely worried about my baby meeting this 2 year old.

AIBU to feel like this?

FullLondonEye · 10/02/2026 08:39

freakingscared · 09/02/2026 23:25

Look just because the toddler in unvaccinated doesn’t mean it can pass on a something he doesn’t have . So if the kid is heathy what’s the issue ? I’m assuming your baby will never go to play area or a play group or the supermarket or on holiday in a plane or similar?

We all know we can't control everything about the environment around us, but as a parent it's our job to protect our children as well as we can with the knowledge we have. The OP is not being overprotective. Refusing to take her child into public spaces in case there are unvaccinated children would be over the top. Knowingly exposing her baby to an unvaccinated child is not overprotective and would at best be irresponsible.

It's very easy to be scathing of vaccines when you don't live with the effects of the diseases they prevent.

@victoriaspomge I had measles at age 4. I have had to spend my life dealing with the after effects so I can speak with experience when I tell you that you are doing the right thing. We're all allowed an opinion on anything of course but on this one I've recently unilaterally decided that my own pretty horrible personal experience means mine carries more weight than someone who once Googled something or read it on Facebook. It's just not worth the risk.

RampantIvy · 10/02/2026 08:39

Great analogy @WelshRabBite

WelshRabBite · 10/02/2026 08:35

I know 100% there are drunk drivers and other dangerous drivers on the road every single day, yet I still drive myself, I still allow my DC to drive and I still walk across roads etc.

What I don’t do is get in a car with a drunk driver/dangerous driver, nor do my DC.

Yes, OP may unknowingly come into contact with other unvaccinated DC during day-to-day life, but that’s very different to inviting an unvaccinated child into your home, specifically to meet the baby when measles is on the rise because of unvaccinated people.

All parents take risk and they mitigate risk, but in the same way I wouldn’t put my DC in a car with a drunk driver, I wouldn’t knowingly open my baby up to the risk of death completely unnecessarily by hosting a play date with a potential measles carrier.

Girliefriendlikespuppies · 10/02/2026 08:35

Unless you’re keeping your baby at home for the next year or so how will you possibly know if everyone they come into contact with is vaccinated or not?

Personally I think YABU, you sound really snobby and sneery towards your partners family.

MonsteraDeliciosa · 10/02/2026 08:34

TwilightAb · 10/02/2026 08:28

Depends, are you not allowing this out of genuine concern or because you want to prove a point? I was an unvaccinated child (I've since been vaccinated as an adult and both my children are vaccinated). You and your baby will likely to come in to contact with other unvaccinated children or even adults, you just won't be aware of it. What about for example if your baby goes to nursery before they are vaccinated and then come in to contact with an adult there who is unvaccinated?

Unknown dangers are everywhere, as previously mentioned, but you can mitigate risk by avoiding known dangers.

And what's wrong with making a point anyway? (not that I'm suggesting OP is doing that) Anti-vaxxers are a dangerous menace.

Itsthesameeveryday · 10/02/2026 08:31

victoriaspomge · 10/02/2026 01:22

Thank you to those sharing more info on measles and vaccines etc.

My partner also has 2 friends whose 1 year old's haven't been vaccinated either, and the kids have been abroad, go soft play, go everywhere basically in the same city, he thinks "Oh their kids are OK, stop worrying" which I think is a totally irresponsible attitude for him to have.

@Icanneverthinkofaname -Hi, where did you read that the outbreak was mainly in vaccinated patients?

Anti vaxxers are always going to come on here and make stuff up - its complete crap. Some of the eradicated conditions from years ago were horrific and we are so fortunate theyre not around any more.

No, I would not let my gorgeous newborn near an unvaccinated child until they've had their vaccinations at a year old. Full stop.

RampantIvy · 10/02/2026 08:30

Can posters please stop with the Whataboutery!

It's all about dealing with known risks. It's the same with covid. Why would you knowingly put a baby at risk when you know the risks are higher?

TwilightAb · 10/02/2026 08:28

Depends, are you not allowing this out of genuine concern or because you want to prove a point? I was an unvaccinated child (I've since been vaccinated as an adult and both my children are vaccinated). You and your baby will likely to come in to contact with other unvaccinated children or even adults, you just won't be aware of it. What about for example if your baby goes to nursery before they are vaccinated and then come in to contact with an adult there who is unvaccinated?

helplesshopeless · 10/02/2026 08:28

Also just to add, if there had been an outbreak in our area of the country at the time, I would have put my foot down regardless

RampantIvy · 10/02/2026 08:28

busyd4y · 10/02/2026 07:48

My children are much older now but when they were babies I wouldn't have had a clue about the vaccination status of all the other children they met. Is it a new thing to be asking this? I'm really surprised you would know this about multiple children.

Are you in the UK? It wasn't even something that was asked about at nursery as I remember a conversation with an Australian friend who was surprised by that

Neither would I, but in this case the OP knows the toddler is unvaccinated. It's all about risk assessment, and she has assessed the risks and doesn't want to put her baby at risk. That's all.

It just means that the toddler will have to wait until after the baby has been vaccinated.

Imdunfer · 10/02/2026 08:27

Icanneverthinkofaname · 10/02/2026 00:23

If the toddler is well and healthy, what exactly is it a "super spreader" of?

Have you heard the term "incubation period"? If not you should look it up.

helplesshopeless · 10/02/2026 08:25

I had the same issue except that the unvaccinated children were my partner’s nieces so very close family. I took advice from a number of doctors and midwives who were quite relaxed about it (which surprised me) and suggested that it should be fine as long as we make sure the unvaccinated children are well and no sniffles etc when they visit. I felt I had to allow it on that basis given the relationship. No way would I agree to such a distant person that I didn’t even know!

jimoine · 10/02/2026 08:22

You don’t know the vaccination status of every person you come into contact with, you just happen to know about this one.

MonsteraDeliciosa · 10/02/2026 08:17

Imagine if people from 100 years ago, who had watched children suffering and dying from measles learned that the disease became eradicated here due to modern vaccines, only to have a resurgence because of some refusing to actually take the bloody thing or give it to their children!
They'd be aghast at the sheer, jaw dropping stupidity.

Keep these morons away from your baby, OP.

randomchap · 10/02/2026 08:15

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randomchap · 10/02/2026 08:14

freakingscared · 10/02/2026 00:37

yep My oldest vaccinated caught measles from a just vaccinated cousin a few years ago . I don’t think people realise how much the mmr sheds

You don't even understand what the vaccine sheds

https://www.sciencedirect.com/science/article/abs/pii/S1386653224000581

It's not a live virus, it's the measles RNA. Not a live virus

FoamShrimps · 10/02/2026 08:11

Eviangeica · 09/02/2026 22:11

I’m not going to comment on the family dynamics but there’s no way in hell when mine were babies would they be near unvaccinated children until mine had the vaccines. This is a hill I would happily die on.

This. Yanbu at all, obviously cannot know if any random you may meet is vaccinated but fair precaution to say those you know aren’t don’t come near the baby

hazelnutvanillalatte · 10/02/2026 08:09

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Flu went through my kids' school and the unvaccinated children were all extremely unwell with many hospitalised. Over half my DS' class were off. My vaccinated children were fine.

Screamingabdabz · 10/02/2026 08:06

TaraC25 · 09/02/2026 22:59

IMO You're being ridiculous.

If you're confident that vaccines work to protect your baby, then surely your baby wouldn't catch anything anyway? Being vaccinated doesn't stop people (or babies/toddlers/children) from spreading and passing viruses.

The toddler could still be breastfed for all you know and have amazing natural immunity!

You can be formula fed and have great ‘natural immunity’ too. My 70 year old brother was a ‘Cow & Gate baby’ - he looks 20 years younger and has never ailed a day in his life.

MonsteraDeliciosa · 10/02/2026 08:04

Soontobe60 · 09/02/2026 23:32

Assuming you’re in the UK, are you going to keep your baby at home until they get their vaccine at 1 yr old? No park, no baby sensory, no play dates with other mums?

Eh? You think that because it is impossible to avoid unknown dangers, people shouldn't bother keeping their newborns away from known dangers?
Really?

BlackeyedSusan · 10/02/2026 07:51

victoriaspomge · 09/02/2026 22:03

Yes thank you.

Its all to please his biological half brother and I find it really strange myself.

I am really concerned as now the UK has just lost its measles elimination certificate.

I will be putting my foot down, but he makes me feel I am being to precious and over protective.

You don't fuck about with measles. Very infectious and can be deadly.

busyd4y · 10/02/2026 07:48

victoriaspomge · 10/02/2026 01:22

Thank you to those sharing more info on measles and vaccines etc.

My partner also has 2 friends whose 1 year old's haven't been vaccinated either, and the kids have been abroad, go soft play, go everywhere basically in the same city, he thinks "Oh their kids are OK, stop worrying" which I think is a totally irresponsible attitude for him to have.

@Icanneverthinkofaname -Hi, where did you read that the outbreak was mainly in vaccinated patients?

My children are much older now but when they were babies I wouldn't have had a clue about the vaccination status of all the other children they met. Is it a new thing to be asking this? I'm really surprised you would know this about multiple children.

Are you in the UK? It wasn't even something that was asked about at nursery as I remember a conversation with an Australian friend who was surprised by that

Minnie798 · 10/02/2026 07:46

Yanbu.
It would be a no from me too.

idontgetitdoyou · 10/02/2026 07:34

show him this thread, you’re not in the wrong here. I would absolutely refuse this.

Coffeeandbooks88 · 10/02/2026 07:26

Pretty sure my aunt lost a lot of hearing due to measles.