Original sentence: Chiropractic has historically been opposed to mandatory vaccination and most chiropractic writings on vaccination, particularly from straight chiropractors, focused on its negative aspects despite its cost-effectiveness against in the prevention of disease.Currently, the anti-vaccination sentiment is espoused by a minority of chiropractors reflecting a gradual shift towards a softer stance on vaccination ranging from ambilavence  to outright acceptance.In summary, the major premises regarding the philosophy of chiropractic include:
Edited sentence: Although the Canadian Chiropractic Association supports vaccination, the American Chiropractic Association supports exemptions to compulsory vaccination laws.However, although most public health officials would agree that vaccination is one of the most cost-effective forms of prevention against infectious disease, it remains controversial in chiropractic.Major premises of philosophy of chiropractic include:.Most chiropractic writings on vaccination, particularly from Palmer's modern followers, focus on its negative aspects.Surveys in Canada in 2000 and 2002 found that about 40% of chiropractors supported vaccination, and that over a quarter opposed it and advised patients against vaccinating themselves or their children