17 September 2024 : Clinical Research
Influenza Hemagglutinin Antibody Levels in the Elderly: Impact of Sex, Age, and Influenza/COVID-19 Vaccination Status During the 2021/2022 Epidemic Season in Warsaw, Poland
Magdalena Proniewska-Sadowska
1ABCDEF*, Anna Poznańska 2C, Lidia Bernadeta Brydak 3ABDEFG
DOI: 10.12659/MSM.945002
Med Sci Monit 2024; 30:e945002
Table 5 Comparison of geometric mean titer values in persons vaccinated and unvaccinated against COVID-19 according to the subtype of influenza A virus and the influenza B virus lineage (1-sided Mann-Whitney test)
| Virus type | Number of vaccinated* | GMT vaccinated | Number of unvaccinated* | GMT unvaccinated | Significance** (p-value) |
|---|---|---|---|---|---|
| A/Victoria/2570/2019 (H1N1)pdm09 | 142 | 35.8 | 10 | 30.3 | NS |
| A/Cambodia/e0826360/2020(H3N2) | 220 | 116.8 | 26 | 71.9 | 0.008 |
| B/Washington/B/Victoria lineage | 222 | 46.6 | 25 | 27.9 | 0.007 |
| B/Phuket/3073/2013 (B/Yamagata lineage) | 226 | 65.9 | 26 | 35.9 | 0.002 |
| * We take into account people with non-zero antibody titers; ** Mann-Whitney test. NS – not significant. | |||||