Are kids getting vaccinated too slowly?

Last year was all about the push to vaccinate adults and teens against COVID-19, and despite a slow start we certainly got there in the end.

Now this year the vaccine focus has turned to two things: third doses for adults, and first doses for younger kids.

So how is the vaccine rollout for 5-11s going? How do the vaccines work in kids and what is the latest of safety and efficacy?