A question I get asked *a lot* is…
“What are the long-term effects on babies born after #COVID19 #vaccination in #pregnancy?”
So let’s talk about what we know… 🧵
“What are the long-term effects on babies born after #COVID19 #vaccination in #pregnancy?”
So let’s talk about what we know… 🧵
Let’s start by looking at the effects at birth. We now have four large datasets from three countries telling us that babies born after vaccination in pregnancy are normal. 2/
USA
nejm.org/doi/full/10.10…
medrxiv.org/content/10.110…
USA
nejm.org/doi/full/10.10…
medrxiv.org/content/10.110…
But is there a possibility that something will emerge in these healthy babies, months or years down the line? 5/
Obviously we don’t yet have data on what these babies will be like at, say, two years old, but we can use what we know about vaccination in pregnancy to make some predictions, with high confidence. 6/
Like the other vaccines routinely given in pregnancy, mRNA COVID19 vaccines do not cross the placenta. So they don’t actually get into the baby. This reduces the risk of an unexpected effect a lot. 7/
https://twitter.com/vikilovesfacs/status/1397131519618162689
And from this, we might say that we expect the long term effects of these vaccines on babies to be similar to other vaccines we give in pregnancy… and we’ve never detected any. 8/
But finally, one thing I think is worth remembering if you’re pregnant right now is that there’s something going round at the moment which *can* have a long-term impact on the health of your baby.
COVID. 9/
COVID. 9/
We know that catching COVID in late pregnancy makes it more likely that you and your baby will suffer from a number of poor outcomes.
I don’t want to scare anyone here. Lots of ppl catch COVID in pregnancy and are fine. But these are more likely. 10/
bmj.com/content/370/bm…
I don’t want to scare anyone here. Lots of ppl catch COVID in pregnancy and are fine. But these are more likely. 10/
bmj.com/content/370/bm…
Among these, it’s about twice as likely, if you catch COVID in late pregnancy, that your baby will be born preterm.
And babies who are born preterm are more likely to grow up with various physical and leaning disabilities. 11/
And babies who are born preterm are more likely to grow up with various physical and leaning disabilities. 11/
So just thinking about long-term outcomes for babies, we have every reason to expect the healthy babies born after vaccination in pregnancy will remain healthy.
On the other hand, COVID does pose long-term risks to babies and vaccination can prevent them. 12/12
On the other hand, COVID does pose long-term risks to babies and vaccination can prevent them. 12/12
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