Timeline of Nasal Swab Specimen Collection Among Unique Nasal Swab Specimens
| Time Period of Specimen Collection . | Unique Specimens, Total No. (n = 4273) . | Unique Specimens, No. (%)a . | |||
|---|---|---|---|---|---|
| No Viral Detection (n = 3521) . | Single Viral Detection (n = 570) . | Single Viral Codetection (n = 77) . | Multiple Viral Detections (n = 105) . | ||
| November 2019–February 2020 | 1324 | 932 (70.4) | 269 (20.3) | 42 (3.2) | 81 (6.1) |
| March–September 2020 | 1117 | 972 (87.0) | 121 (10.8) | 15 (1.3) | 9 (1.3) |
| October 2020–June 2021 | 1832 | 1617 (88.3) | 180 (9.8) | 20 (1.1) | 15 (0.8) |
| Time Period of Specimen Collection . | Unique Specimens, Total No. (n = 4273) . | Unique Specimens, No. (%)a . | |||
|---|---|---|---|---|---|
| No Viral Detection (n = 3521) . | Single Viral Detection (n = 570) . | Single Viral Codetection (n = 77) . | Multiple Viral Detections (n = 105) . | ||
| November 2019–February 2020 | 1324 | 932 (70.4) | 269 (20.3) | 42 (3.2) | 81 (6.1) |
| March–September 2020 | 1117 | 972 (87.0) | 121 (10.8) | 15 (1.3) | 9 (1.3) |
| October 2020–June 2021 | 1832 | 1617 (88.3) | 180 (9.8) | 20 (1.1) | 15 (0.8) |
aPercentages are row percentages. Single viral detection was defined as a nasal swab specimen collected from a unique participant in which only 1 respiratory pathogen was detected over the study period. Single viral codetection was defined as a nasal swab specimen collected from a unique participant in which >1 respiratory pathogen was concurrently detected over the study period. Multiple viral detections were defined as ≥2 positive nasal swab specimens collected at distinct time points from the same participant over the study period, ≥7 days apart when different pathogens were detected and ≥14 days apart when pathogens were the same.
Timeline of Nasal Swab Specimen Collection Among Unique Nasal Swab Specimens
| Time Period of Specimen Collection . | Unique Specimens, Total No. (n = 4273) . | Unique Specimens, No. (%)a . | |||
|---|---|---|---|---|---|
| No Viral Detection (n = 3521) . | Single Viral Detection (n = 570) . | Single Viral Codetection (n = 77) . | Multiple Viral Detections (n = 105) . | ||
| November 2019–February 2020 | 1324 | 932 (70.4) | 269 (20.3) | 42 (3.2) | 81 (6.1) |
| March–September 2020 | 1117 | 972 (87.0) | 121 (10.8) | 15 (1.3) | 9 (1.3) |
| October 2020–June 2021 | 1832 | 1617 (88.3) | 180 (9.8) | 20 (1.1) | 15 (0.8) |
| Time Period of Specimen Collection . | Unique Specimens, Total No. (n = 4273) . | Unique Specimens, No. (%)a . | |||
|---|---|---|---|---|---|
| No Viral Detection (n = 3521) . | Single Viral Detection (n = 570) . | Single Viral Codetection (n = 77) . | Multiple Viral Detections (n = 105) . | ||
| November 2019–February 2020 | 1324 | 932 (70.4) | 269 (20.3) | 42 (3.2) | 81 (6.1) |
| March–September 2020 | 1117 | 972 (87.0) | 121 (10.8) | 15 (1.3) | 9 (1.3) |
| October 2020–June 2021 | 1832 | 1617 (88.3) | 180 (9.8) | 20 (1.1) | 15 (0.8) |
aPercentages are row percentages. Single viral detection was defined as a nasal swab specimen collected from a unique participant in which only 1 respiratory pathogen was detected over the study period. Single viral codetection was defined as a nasal swab specimen collected from a unique participant in which >1 respiratory pathogen was concurrently detected over the study period. Multiple viral detections were defined as ≥2 positive nasal swab specimens collected at distinct time points from the same participant over the study period, ≥7 days apart when different pathogens were detected and ≥14 days apart when pathogens were the same.
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