World Immunization Week 2016: Immunization game-changers should be the norm worldwide
21 April 2016
http://www.who.int/mediacentre/news/releases/2016/world-immunization-week/en/
4月24-30日は世界予防接種週間
World Immunization Week 2016: Immunization game-changers should be the norm worldwide
21 April 2016
http://www.who.int/mediacentre/news/releases/2016/world-immunization-week/en/
4月24-30日は世界予防接種週間