流感(flu)

衞生防護中心- 乙型流感嗜血桿菌感染（侵入性） :http://www.chp.gov.hk/tc/content/9/24/8870.html
Centre for Health Protection- Haemophilus influenzae type b infection (invasive) http://www.chp.gov.hk/en/content/9/24/8870.html
CUHK 健康促進及防護:: 流行性感冒和禽流感 :http://www.cuhk.edu.hk/health_promote_protect/chinese/influenza.html
CUHK Health promotion and Protection:: Influenza and Avian Flu :http://www.cuhk.edu.hk/health_promote_protect/influenza.html