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Table 4 The baseline number of influenza case during epidemic and non-epidemic periods

From: Using a community based survey of healthcare seeking behavior to estimate the actual magnitude of influenza among adults in Beijing during 2013-2014 season

Characteristics

Epidemic period

Non-epidemic period

Subtypes

 A(H1N1) pdm 09

25,098

118

 A(H3N2)

13,060

1,781

 B

13,714

1,002

Age groups

 18–59

44,409

423

  ≥ 60

7,592

2,478

Total

52,001

2,901