Questionnaire survey on mumps vaccination for parents in Nara prefecture, Japan

Abstract

Japanese parents want the mumps vaccine to be included in the NIP. Japan is able to start routine use of the mumps vaccine now.

The estimated impact of decreased childhood vaccination due to COVID-19 using a dynamic transmission model of mumps in Japan

“…Financial support from a government is known to be the key factor to raise mumps vaccine rate. 9,17 Our study has several limitations. First, there is a large uncertainty about the duration and the magnitude of impact of COVID-19 on childhood vaccination rate and transmission rate of mumps.…”

“…The data of recent coverage rate (Figure S1) and national population were incorporated in the model. 2,4,6,[9][10][11] The details of the model were provided in Supplemental file. Since January 2020, the coverage was assumed to linearly decrease until June 2020, reaching a 35% relative reduction in June 2020 compared to that from 2015 to 2019 (Table S1).…”

“…2 The coverage rate of second dose was assumed to be half of that of first dose from a previous study. 9 The model run was conducted from January 2015 to December 2049. The validation of the model was performed by comparing the incidence from the model run from January 2015 to December 2019 to the observed incidence in the same 5-y period.…”

Questionnaire survey on maternal pertussis vaccination for pregnant women and mothers in Nara prefecture, Japan

“…Based on a previous study that investigated vaccine acceptance in Japan, we expected that between 65% and 95% of subjects would wish to have the vaccine if appropriate information was provided. 21 The required sample size to detect a 10% difference in the proportions of "yes" and "no" between two questions (for example 70% yes to one question and 80% yes to another question) was 784 with 0.9 of power. We used Pearson's chi-squared test to compare opinions between pregnant women who visited the Obstetrics and Gynecology Department and mothers who visited the Pediatrics Department.…”

“…For example, the majority of parents found it acceptable for their children to have two doses of mumps vaccine (which has not been included in the Japanese NIP due to concerns over adverse events) if they were provided with appropriate information and the cost of vaccination was covered by the government. 21 For the reasons stated above, investigating social attitudes toward Tdap vaccination during pregnancy to prevent neonatal pertussis may be necessary if Japan is to decrease its neonatal pertussis incidence and the burden of this disease in the near future. This study aimed to evaluate the acceptance of maternal Tdap vaccination, as well as willingness to have the vaccine with and without reimbursement of the vaccine's cost, by administering a questionnaire to Japanese mothers and pregnant women while simultaneously providing them with accurate information.…”