H1N1疫苗接種次數

在英國與澳洲的研究顯示
一次接種就能產生不錯的免疫力
不過小孩可能仍須接種兩次

Response after One Dose of a Monovalent Influenza A (H1N1) 2009 Vaccine — Preliminary Report
Pandemic Influenza Vaccine Policy — Considering the Early Evidence
Trial of Influenza A (H1N1) 2009 Monovalent MF59-Adjuvanted Vaccine — Preliminary Report
Published at www.nejm.org September 10, 2009