Pandemic influenza: mass gatherings and mass infection.
Rashid
Harunor
H
Haworth
Elizabeth
E
Shafi
Shuja
S
Memish
Ziad A
ZA
Booy
Robert
R
D004196:Disease Outbreaks; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000635:transmission*; D014195:Travel