Table 1.
Clinical and demographic characteristics of patients involved in an A/H3N2 influenza outbreak related to the religious retreat, in the Apulia region of Italy, in August 2022.
| N | % | |
|---|---|---|
| Patients | 85 | 100% |
| Sex | ||
| Female | 45 | 52.9% |
| Male | 40 | 47.1% |
| Median age (IQR 1) | 13 (10–21) | |
| Clinical status | ||
| Asymptomatic | 20 | 23.5% |
| Symptomatic | 65 | 76.5% |
| Fever | 45 | 52.9% |
| Cough and/or sore throat | 53 | 62.4% |
| Cold | 15 | 17.6% |
| Headache | 13 | 15.3% |
| Otalgia and/or otitis | 3 | 3.5% |
| Nausea and/or vomiting | 17 | 20.0% |
| Diarrhea and/or abdominal cramps | 2 | 29.4% |
| Dyspnea | 1 | 1.2% |
| Neurological symptoms (stunning, confusion) | 3 | 3.5% |
| General malaise | 33 | 38.8% |
| Tested nasopharyngeal swab | 17 | 20.0% |
| Positive for influenza A/H3N2 | 11 | 12.9% |
| Positive for SARS-CoV-2 | 0 | |
| Positive for rhinovirus | 4 | 4.7% |
| Negative 2 | 4 | 4.7% |
| Flu vaccination (2021/2022) | 14 | 16.5% |
| Travel in the last 2 weeks | 19 | 22.4% |
1 IQR = interquartile range; 2 negative for all the tested viruses.