vaccines for our children as young as 5 a good idea. dr. saphier joins us now. >> good morning, ainsley. ainsley: good morning. let's tackle j and j a lot of americans who have already been vaccinated they are worried because they have gotten the j and j. what do they do when it comes to booster shots. >> ainsley, what's taking over the news of the morning is that the fda, now the cdc has put forth new clinical preferences. not any strong wording but really they have said that they recommend that adults receive the mrna vaccine pfizer and moderna over johnson & johnson. pretty par for the pandemic is that he they're months behind canada and several european nations because as there were reports of this very specific clotting disorder, other countries decided to tailor their recommendations. what it turns out data when you look at it 4 per 1 million patients who get the johnson & johnson vaccine are developing these rare clotting disorders.