[guilhas]

What do they even mean by this? “There’s not a way to be certain, unless we found some specific marker for the vaccine”

I imagine they haven't found a "marker" because they haven't looked for one. Also haven't found one for anything else

Healthy child takes vaccine / get myocarditis soon after / dies... / vaccine is known to cause myocarditis

It's not definitive, but it's probably a better explanation than the rest. Unless the virus or some other condition come forward and confess

[ceejayoz]

A few months back they made a big deal about having confirmed a handful of deaths. This is a walk-back.

Either way, the safety profile is clear. We gave billions of shots with wonderfully low complication rates, especially versus untreated COVID.

[guilhas]

But nothing changed, they still think it's "probable" just that "there is no way to know anything definitively"

Sounds more like a cop-out

Alse more countries reviewed the vaccine and concluded not as safe for children