Suggestion for vaccine reporting. Make sure we see both sides of the equation. 2 people having a reaction doesn't tell me much unless I know how many people had the vaccine. If it was out of 4 that's a bit concerning. Out of 20k (say) less so.

This is going to be increasingly important as we go through the rollout. Because such a large number of people will get it it's inevitable that they'll be coincidences that make it look like the vaccine may have led to a bad outcome. These have to be contextualized.

And context isn't just about numbers obviously. The two NHS workers who had a reaction both had a history of allergic reactions and carried adrenaline pens for that reason. Don't burying that half way down a story. Say it in the initial tweet or sub-head.