Influenza Positive Tests Reported to CDC by
U.S. Clinical Laboratories
2020-2021 Season
Week Total A Total B Percent Positive A Percent Positive B Total # Tested % Positive
20204019210.150.17122000.32
20204130280.20.18149240.38
20204227260.170.17151120.35
20204321210.120.12166110.25
20204422190.10.09205520.19
20204531250.110.09271870.2
20204632440.090.12349070.21
20204734540.080.13387460.22
20204819360.050.1352760.15
20204931650.070.15425260.22
20205026760.060.18417780.24
20205136810.080.19409170.28
20205234670.090.18363100.27
20205334730.080.18404710.26
20210128950.060.21449710.27
20210224480.050.11418070.17
20210321620.050.15390020.21
20210412500.030.13364550.17
20210521530.050.14365590.2
20210611350.030.1340890.13
20210719220.050.06324240.12
20210817250.040.07343280.12
20210914170.040.04341840.09
20211015210.040.06341910.1
20211126190.070.05346800.12
20211213170.030.04357630.08
2021131390.040.02319000.06
20211410140.030.04315200.07
2021158130.020.04302380.06
20211612160.030.05305680.09
20211716100.050.03312470.08
20211810150.030.04301760.08
20211917130.050.04290350.1
20212023200.080.07284160.15
20212114230.050.09245740.15
2021227150.020.06238860.09
2021238180.030.07252580.1
20212417120.060.04244400.11
20212512170.050.07223660.12
2021263130.010.05227560.07
202127590.010.03250650.05
20212811170.040.06262580.1
2021295130.010.04277160.06
20213011120.030.03302730.07
20213114180.040.06286920.11
2021328110.020.03349760.05
2021331390.030.02332950.06
20213413110.030.02398280.06
20213522130.050.03404130.08
2021361160.030.01353940.04
2021375110.010.02379330.04
20213810120.030.04276180.07