Emerging Infectious Disease ISSN: 1080-6059

Mass Antibiotic Treatment for Group A Streptococcus Outbreaks in Two Long-Term Care Facilities¹

Andrea Smith*†, Aimin Li‡, Ornella Tolomeo*, Gregory J. Tyrell§†, Frances Jamieson‡, and David Fisman*¶

Author affiliations: *City of Hamilton Social and Public Health Services Department, Hamilton, Ontario, Canada; †University of Alberta, Edmonton, Alberta; ‡Canada Ontario Ministry of Health and Long-Term Care, Toronto, Ontario, Canada; §Provincial Laboratory for Public Health, Edmonton, Alberta, Canada; ¶McMaster University, Hamilton, Ontario, Canada

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Figure 3

Timeline for outbreak 2. Solid lines represent the time of onset and duration of illness among three cases with invasive GAS infection in outbreak 2, relative to the initiation of the outbreak investigation (date=0). Daggers (†) denote death. Mass antibiotic treatment was started 2 days after the investigation was initiated.

Figure 3. Timeline for outbreak 2. Solid lines represent the time of onset and duration of illness among three cases with invasive GAS infection in outbreak 2, relative to the initiation of the outbreak investigation (date=0). Daggers (†) denote death. Mass antibiotic treatment was started 2 days after the investigation was initiated.

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¹Presented in part at the 12th Annual Scientific Meeting of the Society for Healthcare Epidemiology of America (SHEA), April 6–9, 2002, Salt Lake City, Utah.

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