D E P A R T M E N T    O F    E P I D E M I O L O G Y
Laboratory of Epidemiological Analysis of Biological Contamination

Reports on cases of influenza and influenza-like illness
in Poland - 2001

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Size of files: 21-22 KB.

Source: weekly / biweekly reports prepared by Voivodship Sanitary-Epidemiological Stations and sent to the National Institute of Hygiene