to give their children whichever shot is available. may be that the internet vaccine brings an immune response slightly more rapidly. on the other hand the three dose of pfizer regiment may also bring a greater immune response after the third dose. arthel: dr. marc siegel is a news contributor and medicine at medical center. so dr. mark, do you agree, also should parents were about side effects? i do agree with doctor marks i ve interviewed him. i think it is right for the fda to approve this. cdc is going to approve it as you just said in a couple of hours. there s 18 million children under the age of five in the united states. those studies that looked at moderna and pfizer, they show moderna but 25% developed fevers. both groups, pfizer and moderna had fatigue print that was one of the main symptoms. and arthel level one 5% of