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. Author manuscript; available in PMC: 2016 Jun 2.
Published in final edited form as: Epidemiol Infect. 2014 Jan 24;142(5):922–932. doi: 10.1017/S095026881400003X

Figure 2.

Figure 2

Figure 2

Risk ratios for the effect of hand hygiene interventions with or without facemask on (a) laboratory confirmed influenza, and (b) ILI, in studies conducted in developed countries.