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It would be good to see the originall CDC statement (and that date of that statement), as well as their current position and guidance before passing judgement on this post.

However that would be too objective so here goes

Gist of your point appears to be – 'Government body makes statement based on available studies at the time, new study suggests guidance should be updated accordingly, therefore vaccine is unsafe'.

OK

Also considering the half life of mrna and zero evidence that trace amounts cause any harm whatsoever (mRNA, not DNA remember). What, exactly, is unsafe about their current guidance?

Worth noting these excerpts as well, from what appears to be a very useful study, so thanks for sharing

Our findings suggest that the COVID-19 vaccine mRNA administered to lactating mothers can spread systemically to the BM in the first two days after maternal vaccination. However, the mRNA was only occasionally detected in BM, in trace amounts, and mainly concentrated in BM EVs. The linkage analysis showed that the vaccine mRNA detected in BM was largely fragmented and retained only 12–25% of the original vaccine mRNA integrity. While the vaccine mRNA seems to be translationally inactive, further investigation is required to determine the minimum amount of mRNA needed to elicit an immune response in newborns.

• Trace amounts (Good)
• Highly degraded (Good)
• Small study (Bad)
• More research needed (Good)

Any trace mRNA in expressed breastmilk vanishes after 48 hours, so if you were to be ultra cautious, you'd just follow the new research/guidance and wait.

The only vaccines I can find info on that should not be given during pregnancy/early stage breastfeeding are live ones. Such as MMR, Polio, Typhoid, Yellow fever etc.

You only know what you know once you know it – if they now don't bother updating guidance then sure, you'll quite rightly have a stick to beat them with

So do you have a link to the original CDC statement?

It's only false pretences if they knew the advice was false at the time it was given. Other I think that unlikely but hard to know unless the original date and content of the statement is shared.

There's also still nothing to suggest the vaccine is unsafe, which again I assume was the point of the link posting.

Might be worth seeing both sides before criticising, don't you think?

I will try and find it for balance.

The accuracy of statements given to the public is based on the available research and test results at that time.

Unsurprisingly, and very scientifically, that research creates new guidance over time.

When taking Paracetamol, do you still refer to the guidance issued in 1956? No. Because it's changed quite a bit since then.

It's a bit of a silly position.

If you're saying the CDC knew that what they were saying was false, that's a very different point, and one you'd need to back up with some evidence.

Otherwise, not much to see here really.

According to your own link, all the CDC actually said was that the vaccine was safe for pregnant and breastfeeding women. Also mentioned was the anti-body transfer, which is seen as a benefit.

Now your boy Shellenberger is paraphrasing in that tweet of course, but current guidance includes the words 'Although the overall risks are low' re. vaccines and pregnancy, and 'Evidence continues to build' that they're safe before, during and after pregnancy. I'd be majorly surprised if the December 2020 guidance didn't have the same caveats, for rather obvious reasons. Lawsuits being one, very early days of the vaccine being the other.

The body that made the claim that you're highlighting as misleading wasn't even made by them – it was made by some outfit called 'The Academy of Breastfeeding Medicine'. Not the CDC. And this, it's worth noting, was December 2020. Not last month, for example.

EVEN THEN It's not 'presented in certainties' as you claim. Note the fact this

a) isn't the CDCs statement
b) uses the word 'unlikely' and 'less likely'. Not 'Will not' / 'Won't' etc etc.

“It is unlikely that the vaccine lipid would enter the bloodstream and reach breast tissue,” the Academy of Breastfeeding Medicine assured mothers in a statement on December 14, 2020. “If it does, it is even less likely that either the intact nanoparticle or mRNA transfer into milk.”

Jeez

And this is before I've even tried to find the historical CDC statement

Read your own stuff!

With the best actual scientific knowledge available at the time. Comparisons can be made, but only if they have enough similarities to make them useful.