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Table 2 Time distribution of positive samples in the 3 monitoring years (n)

From: Establishment and evaluation of a theater influenza monitoring platform

Year October November December January February March Total
2014–2015
 Samples collected (n) 78 248 342 222 139 411 1440
 Positive samples (n (%)) 13 (16.67) 40 (16.13) 136 (39.77) 50 (22.52) 12 (8.63) 7(1.7) 258 (17.92)
2015–2016
 Samples collected (n) 104 181 246 473 455 353 1812
 Positive samples (n (%)) 4(3.85) 15(8.29) 0(0.00) 72 (15.22) 130 (28.57) 128 (36.26) 349 (19.26)
2016–2017
 Samples collected (n) 3 144 279 237 180 426 1269
 Positive samples (n (%)) 0(0.00) 18(12.5) 2(0.72) 39 (16.46) 12(6.67) 46(10.80) 117 (9.22)
  1. % represents the positive ratio in monthly collected samples