Fig 1.
History of approval and the national immunization program guidelines for measles, rubella, mumps, and varicella vaccine.
*2008–2012 Catch-up second doses of immunization for 13- and 18-year-old individuals. **1995–2003 Catch-up immunization for junior high school-aged boys and girls. a For infant and children aged on 1 to 6 years. b For infant aged 1 year (1st dose) and children aged 5 to 6 years (2nd dose). c For children in 2nd grade of middle high school (aged 13 to 14 years). d For infants and children aged 1 to 7.5 years. e For infants and children aged 1 to 3 years (2 doses, at least 3 months interval). KL method: Combined use of inactivated (killed) and live measles vaccines. NIP, National immunization program; MMR, measles, mumps, rubella vaccine.
Fig 2.
Number of eligible patients among those who visited the hospital between June 1, 2017, and May 31, 2018.
Fig 3.
Travel destinations and purpose.
The purpose of travel was considered to be one per participant. Those traveling to more than one region were categorized as “Multiple regions” and were not included in the total number for each region. Participants who traveled to their own or their parents’ country of origin were classified as “Traditional VFR”. VFR; visiting friends and relatives.
Table 1.
Characteristics of the participants.
Fig 4.
Details of MMRV vaccination status according to the immunization records.
Vaccine records brought by patients were consulted, and subjects who had received at least one dose of measles, mumps, rubella, and varicella vaccine in each were counted.
Table 2.
Details of individuals requiring catch-up immunization.
Table 3.
Multivariate analysis of factors for implementing catch-up measles, mumps, rubella, and varicella immunization.