Influenza Positive Tests Reported to CDC by
U.S. Clinical Laboratories
2018-2019 Season
Week Total A Total B Percent Positive A Percent Positive B Total # Tested % Positive
201840218711.310.42165281.74
201841223831.230.46180351.69
201842311891.540.44201901.98
2018433401011.590.47213692.06
201844389991.740.44223522.18
201845543982.320.41233992.73
2018466681022.730.41243813.15
201847893733.630.29245983.92
2018489981053.540.37281463.91
20184916601505.730.51289236.25
20185032401919.820.573299010.4
201851528618513.820.483824214.3
201852684223515.840.544318416.38
201901523414111.840.314418312.16
201902506521312.230.514140612.74
201903665218015.910.434180616.34
201904829324118.870.544393919.42
2019051060227721.950.574829222.52
2019061305740724.350.755361525.11
2019071324650025.070.945282926.01
2019081361846125.380.855364626.24
2019091336242925.280.815283726.1
2019101314842624.830.85293325.64
2019111333655625.111.045309226.16
2019121030960521.251.244849422.5
201913765558717.961.374260319.34
201914488158313.361.593652814.95
201915319655510.141.763151311.9
20191618915096.771.82279098.59
20191710274074.171.65245845.83
2019186273223.171.62197674.8
2019194022722.311.56173993.87
2019203322641.981.57167163.56
2019212712551.761.65153893.41
2019222122241.51.58141083.09
2019231412051.131.65123772.79
2019241291341.151.2111432.36
201925108901.050.87102371.93
20192693951.031.0689512.1
201927126851.460.9985782.45
201928101811.150.9287792.07
201929106791.310.9780722.29
201930101851.31.177162.41
20193198821.311.0974622.41
20193270821.061.2565602.31