If further research confirms these findings, it could shift dietary recommendations. As people change their diets, there could be a decrease in anti-microbial resistance.

The benefits of being immunized against the sexually transmitted human papillomavirus are spilling over to those who are not vaccinated.

The CDC study of 14 to 24-year-old females found the prevalence of cancer-causing strains of H.P.V. dropped 90 percent among vaccinated females and there was a 74 percent reduction among their unvaccinated counterparts pointing to a ‘herd effect’.

Experts stressed, however, that does not mean kids can go unvaccinated and rely on herd protection. Herd effects only exist when a large portion of the population is vaccinated.