Table 2.
Symptoms of patients infected with influenza virus or SARS-CoV-2 in the BIS 2019/2020, respectively 2020/2021 in Bavaria, Germany and PPV of each symptom
| Symptoms | Influenzavirus BIS 2019/2020 | SARS-CoV-2 BIS 2020/2021 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Positive | Negative | PPV | Positive | Negative | PPV | |||||
| number (N = 517) | % of total | number (N = 859) | % of total | number (N = 30) | % of total | number (N = 427) | % of total | |||
| Cough | 491 | 95% | 672 | 78% | 42% | 20 | 67% | 240 | 63% | 8% |
| Acute onset | 474 | 92% | 707 | 82% | 40% | 21 | 70% | 349 | 91% | 6% |
| Fever | 469 | 91% | 582 | 68% | 45% | 17 | 57% | 227 | 59% | 7% |
| ILI | 423 | 82% | 406 | 47% | 51% | 10 | 33% | 109 | 28% | 8% |
| Other symptoms: | 373 | 72% | 624 | 73% | 37% | 16 | 53% | 265 | 69% | 6% |
| Muscle pain | 89 | 17% | 154 | 18% | 37% | 1 | 3% | 18 | 5% | 5% |
| Pain in the limbs | 107 | 21% | 189 | 22% | 36% | 5 | 17% | 46 | 12% | 10% |
| Sore throat | 133 | 26% | 297 | 35% | 31% | 8 | 27% | 100 | 26% | 7% |
| Headache | 234 | 45% | 384 | 45% | 38% | 4 | 13% | 97 | 25% | 4% |
| Pneumonia | 15 | 3% | 33 | 4% | 31% | 1 | 3% | 5 | 1% | 17% |
BIS, Bavarian Influenza Sentinel; PPV, positive predictive value.