不明原因流产
Abortion with unknown reasons
unexplained abortion
大流行流感疫苗
Pandemic influenza vaccine
Pandemic influenza vaccines
流行因素
Prevalent factors
epidemics
Epidemiology
epidemiological factor
epidemiological factors
Influential factor
Epidemic factor
Epidemic factors
epidemical factor
Epidemiology factors
Influencing factors of epidemic
endemic factors
人误原因因素
human error cause factors
3类疟疾流行区
Three patterns of malaria-endemic area
A群和C群流行性脑脊髓膜炎
Group A and C epidemic cerebro-spinal meningitis
b型流行性感冒嗜血杆菌
Haemophilus influenzae type b
act-hib
haemophilus influenza type b
b型流行性感冒嗜血杆菌Hib
haemophilus influenza type b
C群流行性脑脊髓膜炎
Neisseria meningitidis serogroup C
epidemic cerebrospinal meningitis by serogroup C