Vaccines have been authorized in the u.s. for kids younger than five. and joining us now, dr. murray, a pediatric emergency physician at the university of rochester medical center. so nice to have you back. this is the news i have been waiting for. so many parents of toddlers have been waiting for. how did it take so long to get to this point? we have to follow the process, right? we don t want to rush the data collection or the science. and we know that this was being studied during a time of changing varnltiants as well. so it is frustrating but again, we have to trust the process and make sure that the data is collected and get the information that we needed. and hopefully we ll see what we need to see. and can i ask about the variant issue here, is the vaccine that is being that would be given to children still based off of the old strain? in other words, the vaccine that