Earlier this year Fairfax revealed chiropractors were receiving government-mandated training by anti-vaccination clinicians who believe diet and ''keeping the spine in line'' will prevent deadly diseases such as polio.

On Thursday the chairman of the Chiropractic Board of Australia said it had removed some courses from its approved training schedule and would be randomly auditing practitioners to ensure they were not making unsubstantiated claims about the benefits of chiropractic.

It also announced all registered chiropractors would be required to remove anti-vaccination claims from their websites.

''We will not tolerate registered chiropractors giving misleading or unbalanced advice to patients, or providing advice or care that is not in the patient's best interests,'' chairman Phillip Donato said.