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Figure 4 | BMC Infectious Diseases

Figure 4

From: Assessing the use of hospital staff influenza-like absence (ILA) for enhancing hospital preparedness and national surveillance

Figure 4

Estimates of the duration of the epidemic period using the Moving Epidemic Method, for hospital staff-ILA (blue) and London-ILI (red), for influenza seasons (weeks 40 to 20) from 2008/2009 to 2012/2013. The start and end times of the epidemic period are similar for ILA and ILI, with the exception of the 2012/2013 season, which lacked the characteristic peak of cases typically seen in seasonal influenza.

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BMC Infectious Diseases

ISSN: 1471-2334

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