The Knowledge Hub

What is the Knowledge Hub?

Explore the VoICE Knowledge Hub—a searchable database featuring the latest peer-reviewed research on immunization benefits, especially in low- and middle-income countries. Browse the Knowledge Hub using a variety of different filters to find vaccine evidence based on country, region, topic, or disease. Click on a tag to find more evidence on a specific area, such as the return on investment of vaccines or impacts of infectious disease outbreaks.

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Immunizing infants against rotavirus in Japan led to fewer hospitalizations due to herd immunity

In Nagoya, Japan, hospitalizations due to rotavirus (RV) decreased sharply in children 2-4 years of age once the percent of infants vaccinated against RV climbed to around 80%. Few of these older children had likely received the vaccine, suggesting that they were protected as a result of herd immunity.

Yoshikawa T, Matsuki T, Sato K et al.. 2018. Impact of rotavirus vaccination on the burden of acute gastroenteritis in Nagoya city, Japan. Vaccine. 36(4).