Fig. 2. Monthly of first PPSV23 vaccination status for elderly in National Immunization Program by year. The bar graph illustrates the number of individuals who received their first PPSV23 vaccination. The line graph illustrates the percentage of monthly first PPSV23 vaccination for each year from 2013 to 2020. The calculation of the percentage involves using the number of PPSV23 vaccination per month as the numerator, while the denominator comprises the total number of PPSV23 vaccination within the corresponding year, ranging from January to December.

Yakhak Hoeji 2023;67:277-84 https://doi.org/10.17480/psk.2023.67.4.277

© 2023 Yakhak Hoeji