20 May 2022 : Clinical Research
Importance of Influenza Anti-Hemagglutinin Antibodies During the SARS-CoV-2 Pandemic in the 2019/2020 Epidemic Season in Poland
Lidia B. Brydak1ADEFG, Karol Szymański1BF, Katarzyna Kondratiuk1BF, Anna Poznańska2CDE, Adam Kolondra1B, Ewelina Hallmann1BDEF*DOI: 10.12659/MSM.936495
Med Sci Monit 2022; 28:e936495
Table 1 The most important characteristics of the studied influenza.
| Qualitative variables | Number of cases N=934 | Percent* |
|---|---|---|
| Sex | ||
| Men | 663 | 71.0% |
| Women | 266 | 28.5% |
| No data | 5 | 0.5% |
| Voivodeship | ||
| Kujawsko-pomorskie (Kuyaawian-Pomeriania) | 77 | 8.2% |
| Mazowieckie (Mazovia) | 297 | 31.8% |
| Łódzkie (Lodz) | 74 | 7.9% |
| Wielkopolskie (Grather Poland) | 102 | 10.9% |
| Dolnośląskie (Lower Silesian) | 26 | 2.8% |
| Śląskie (Silesian) | 105 | 11.2% |
| Podlaskie (Podlasie) | 223 | 23.9% |
| Zachodnio-pomorskie (Western Pomeranian) | 30 | 3.2% |
| Influenza vaccination 2019/20 | ||
| Yes | 266 | 28.5% |
| No | 646 | 69.2% |
| No data | 22 | 2.4% |
| Previous influenza vaccination | ||
| Yes | 339 | 36.3 |
| No | 589 | 63.1 |
| No data | 6 | 0.6 |
| Chronic diseases | ||
| Yes | 71 | 7.6% |
| No | 857 | 91.8% |
| No data | 6 | 0.6% |
| Hospitalization due to COVID-19 | ||
| Yes | 40 | 4.3% |
| No | 890 | 95.3% |
| No data | 4 | 0.4% |
| Subjective assessment of the COVID-19 course | ||
| Asymptomatic | 155 | 16.6% |
| Mild | 469 | 50.2% |
| Moderate | 273 | 29.2% |
| Severe | 33 | 3.5% |
| Extremely severe | 2 | 0.2 |
| No data | 2 | 0.2 |
| Qualitative variable | Range, average value±standard error of the mean | Quartiles |
| Age | 18–64 years, 37.6 ±0.3 year | 29/37/45 years |
| No data | 2 | 0.2% |
| * Percentages may not add up to 100% due to rounding. | ||