A Small Nih News Today

>> reporter: today, pfizers reported vaccine for kids 5-11 was more than 90% effective in preventing symptomatic covid in clinical trials. this comes on the first day millions of americans became eligible for boosters from moderna and johnson & johnson. pfizers booster was authorized last month, but the c.d.c. has not taken a stand on whether people should mix and match doses, leaving it up to the individual instead. >> there may be some people who might prefer another vaccine over the one that ...