Today said basically is in contrast to the pfizer and moderna vaccine, that all people 18 and above who are vaccinated with the johnson & johnson shot more than two months ago should get a booster and i think that makes great sense. now, it will be interesting to see what the fda does going forward with this concept of mixing and matching. because particularly with the johnson & johnson shot, you could get a much greater augmentation in the production of antibodies if you boost with a vaccine other than the j&j. so it is an intriguing concept. the fda has yet to discuss that. so for people who are under 65, because we ve heard about how boosters will work well for people over 65. for people under 65, when should we think that our protection from our original moderna or pfizer will wear off? well, i think it is reasonable to understand that the efficacy for symptomatic ....