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
2019231412071.141.67123682.81
2019241281341.141.2111432.35
201925109901.060.87102351.94
20192693951.031.0689442.1
201927120841.461.0282012.48
20192891781.150.9978732.14
20192984751.391.2460102.64