US vaccine panel chair questions polio recommendations

The head of a US vaccine advisory group said that some vaccines, like the one for polio, might not be as necessary now because of better medical care and sanitation.

He thinks people should decide for themselves whether to get vaccines, instead of following government rules.

Many doctors are worried because they believe vaccines are important to keep everyone safe.

The US government has been changing its vaccine policies, and some experts think this could put more children at risk of getting sick.

The chair of the group is also part of an organization that supports some unproven medical treatments.