Experts question CDC's approval of COVID vaccines for under-5s because Pfizer study used just THREE children to prove it works and Moderna admits it is only 37% effective: 'We should just assume we don’t have efficacy data'

• The U.S. Food and Drug Administration on Friday authorized Moderna Inc's and Pfizer's shot for children aged six months to five years old
• On Saturday, a CDC panel voted unanimously to recommend vaccines for children as young as six months
• That vote was later signed off by CDC Director Rochelle Walensky meaning a national rollout could begin next week 
• An infectious diseases expert, Dr. Sarah Long, said: 'We should just assume that we don't have efficacy data' regarding vaccine success in under fives
• A Pfizer study used just three children while Moderna's study showed efficacy of just 37 percent in kids aged two through five 
• Pfizer-BioNTech's vaccine is approved for children aged six months to 4 years 
• President Joe Biden's administration plans to roll out the vaccines to the under-5 age groups after the Juneteenth holiday weekend

By PAUL FARRELL FOR DAILYMAIL.COM

In the wake of the CDC's approval of Pfizer and Moderna's Covid-19 vaccine for babies as young as six months, at least one expert has questioned the move.

Dr. Sarah Long, an infectious diseases expert at the Drexel University College of Medicine, told the New York Times: 'We should just assume that we don't have efficacy data.' 

That comes off the back of Pfizer's own reporting that said their statements of 80% effectiveness in children under five was based on the responses of just three children.

Those children were part of a group of ten but seven were given a placebo.

And there are also concerns about the Moderna shot, which is only between 37 per cent and 51 per cent effective, depending on the age of the child receiving it. 

Dr. Sally Long of Drexel University has stated that 'We should just assume that we don't have efficacy data' about vaccines for those under five years old