A child receives a dose of Pfizer's Covid vaccine. rederic J Brown/AFP/Getty ImagesA child receives a dose of Pfizer's Covid vaccine. rederic J Brown/AFP/Getty ImagesExperts fear for US childhood vaccine schedule after hepatitis B guideline changePediatricians say panel’s decision will create confusion and access issues, and condemn ‘parody of public health’ The entire US childhood vaccine schedule is now open for scrutiny, experts say, after government vaccine advisers took up discussions of the safety and efficacy of the vaccines and their components and changed its recommendations on one crucial prevention. Several of the vaccine advisers are longtime anti-vaccine activists, and they were all chosen by Donald Trump’s controversial health secretary Robert F.