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

Abstract

Background In Japan, the mumps‐containing vaccine was withdrawn from routine vaccination in 1993, and it became a voluntary vaccination.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. Methods We conducted a nationwide cross‐sectional study targeting primary care physicians (PCPs) in Japan. We used a web‐based self‐administered questionnaire by Preventive Medicine and Health Promotion Committee Vaccine Team, the Japan Primary Care Association (JPCA), from March to June in 2019. The outcome of the study was the association between PCPs’ knowledge about vaccine and the administration or recommendation of mumps vaccine. We obtained the information on background, subsidies of mumps vaccination for children from the local government, and vaccination quiz scores. We performed logistic regression analysis to estimate the odds ratios (ORs) and 95% confidence intervals (CIs). Results Among 10,470 PCPs in JPCA, 5075 were excluded. We received responses from 1084 PCPs (20.1%) and enrolled 981 participants in the analysis. PCPs with a higher score on the vaccination quizzes were significantly more likely to administrate the mumps vaccine for adults (adjusted odds ratio [AOR] 1.93, 95% CI 1.45–2.59, p < 0.001) and recommend mumps vaccine to adults than PCPs with a lower score (AOR 1.78, 95% CI 1.33–2.40, p < 0.001). Conclusions We revealed an association between the administration or recommendation of mumps vaccine and PCPs’ better vaccination knowledge.

Association between administration or recommendation of the human papillomavirus vaccine and primary care physicians’ knowledge about vaccination during proactive recommendation suspension: a nationwide cross-sectional study in Japan

“…Our results also support these findings. Another study investigating the association between PCPs’ knowledge of vaccination and the administration or recommendation of voluntary mumps vaccination for adults showed the same positive associations 32…”

“…Information resources from social network services or mailing lists from medical service providers seem to be positively associated with the administration or recommendation of voluntary HPV vaccination. This might be because PCPs use virtual communities as valuable knowledge portals for clinically relevant information36 and could be interested in how and why other physicians recommend and administer vaccination 22 32. Government information resources were positively associated with the administration of voluntary HPVv but were negatively associated with the recommendation of routine HPVv.…”

“…Another study investigating the association between PCPs' knowledge of vaccination and the administration or recommendation of voluntary mumps vaccination for adults showed the same positive associations. 32 Compared with that in our previous study from 2012, 23 the proportion of PCPs recommending or administering HPVv was lower in this study: the proportion of HPVv administration decreased from 58.3% for voluntary vaccination alone 23 A study conducted among paediatricians in Osaka, Japan, in 2020 and 2021 revealed that the proportion of paediatricians who administered or actively recommended the HPVv for routine vaccination was 44.5% and 32.5% in 2020 and 67.9% and 40% in 2021, respectively. 33 In addition, a study conducted among OBGYNs in Osaka, Japan, showed that the proportion of OBGYNs recommending the HPVv for teenagers was 70.1% in 2017 3 and 84.6% in 2019.…”

Mumps vaccination and immune status among Japanese university students: A multicenter cross-sectional study

“… 19 We reported a positive association between recommending behavior of primary care physicians regarding mumps vaccine for children and the vaccine uptake by the residents where local subsidies were granted (adjusted odds ratio, 2.42; 95% CI, 1.57–3.71). 20 The recommendations for mumps vaccination could increase if subsidized vaccinations are provided. Therefore, if the central government cannot implement routine mumps vaccination immediately, local authorities should start implementing subsidies for mumps vaccination.…”