Factors associated between behavior of administrating or recommending mumps vaccine and primary care physicians’ knowledge about vaccination: A nationwide cross‐sectional study in Japan

In Japan, the mumps-containing vaccine was withdrawn from routine vaccination in 1993, and it became a voluntary vaccination. This study aimed to evaluate the association between the physicians' knowledge about vaccinations and the administration or recommendation of the mumps vaccine.We conducted a nationwide cross-sectional study targeting primary care physicians (PCPs) in Japan. We used a web-based self-administered questionnaire by...