The majority of people who tested positive for the flu during the week ending March 20 tested positive for type A influenza, with a total of 14 people infected. 8 tested positive for type B.
The week ending March 20 was the 11th week of 2021. In the same week of 2020, there were 77,961 people tested, 45,712 more than in 2021.
There is an influenza division of the CDC whose responsibility it is to keep track of influenza activity year round. This group compiles and analyzes known cases in order to help states and local governments respond accordingly. Figures can change and counts can be adjusted as new information is learned from each patient.
Test results for the past 10 weeks
| Week Ending | Number Tested | Number Positive | Infected % |
|---|---|---|---|
| 01/16/2021 | 54,409 | 74 | 0.1 |
| 01/23/2021 | 49,895 | 87 | 0.2 |
| 01/30/2021 | 43,657 | 64 | 0.1 |
| 02/06/2021 | 50,253 | 78 | 0.2 |
| 02/13/2021 | 48,294 | 47 | 0.1 |
| 02/20/2021 | 43,291 | 44 | 0.1 |
| 02/27/2021 | 49,726 | 45 | 0.1 |
| 03/06/2021 | 44,984 | 33 | 0.1 |
| 03/13/2021 | 45,112 | 30 | 0.1 |
| 03/20/2021 | 32,249 | 22 | 0.1 |
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