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Updated: Oct 25, 2025

Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
The COVID-19 pandemic increased the demand for pneumococcal vaccination in Japan
Akira Komori1,2, Hirotake Mori1, Toshio Naito1
1Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan.
Abstract:
Although routine vaccinations in children decreased during the coronavirus disease 2019 (COVID-19) pandemic, pneumococcal vaccine coverage in older adults has remained unknown. This study was performed to investigate the impact of the COVID-19 pandemic on pneumococcal vaccination in Japan. The numbers of 23-valent pneumococcal polysaccharide vaccines (PPV23) shipped was obtained from an office memorandum released by the Ministry of Health, Labor and Welfare. The results showed that the COVID-19 pandemic increased the need for pneumococcal vaccination, causing shipping restrictions of pneumococcal vaccines. Regular vaccination is still important because there may be a shortage of vaccines during a pandemic.
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