What did you take away from the first rollout that you think could be improved. i think things worked out well this week. it was really rather smooth. there s this question of the mix and match. i hope there will be a degree of flexibility for people, particularly among the johnson & johnson recipients because they re the ones where it s a little complicated in the sense that the booster from moderna and pfizer gave a very, very good boost to the j&j. so the decision is going to be now, when people who got the original j&j, the clinical data that was proposed by the company was very, very good data, showing that a boost with j&j for someone who received j&j to begin with gives a really good response. on the other hand, the mix and match showed the possibility that you could get a boost from another product, for example, moderna boosting a j&j. all of that is going to be sorted out from a regulatory ....