■ 百日咳 新しい局面

http://medical.radionikkei.jp/kansenshotoday_pdf/kansenshotoday-170705.pdf#search=%27%E7%99%BE%E6%97%A5%E5%92%B3+%E7%A7%BB%E8%A1%8C%E6%8A%97%E4%BD%93%27