is, this is the spike protein. this is omicron specifically. all those different colors represent new mutations. there s e484a. you don t need to remember that, but it is a mutation that can help the virus escape some of the protection from the antibodies. there s another one, 501, which basically makes it more transmissible. that s what the scientists are working on right now, to try to figure out how well do the vaccines work, will a new type of vaccine be necessary in the future? then, you know, in light of that, the potential impact, the cdc has strengthened its booster guidance, saying going from you may get it to you should get it if you re an adult. tell us about this. yeah. before, it was after age 50, you should get it. be people 18 to 49 may get it. now, they re saying every adult should get the booster vaccine. here s where we stand on boosters right now.