Table 4.
Exposures to Other Viral Infections Between the Past Flu Season (October Through April) and Vaccinations in Study Participantsa,b
| Variable | Value |
|---|---|
| Previous vaccination | |
| Influenza vaccination (past yearc) | 452 (30.0) |
| Pneumococcal vaccination (everd) | 803 (53.4) |
| Viral infections during the flu season | |
| Any seasonal coronavirus (HCoV-NL63, HCoV-299E, and/or HCoV-OC43) | 109 (7.2) |
| Seasonal coronavirus HCoV-NL63 | 24 (1.6) |
| Seasonal coronavirus HCoV-229E | 7 (0.5) |
| Seasonal coronavirus HCoV-OC43 | 85 (5.6) |
| Any influenza | 105 (7.0) |
| Influenza A | 91 (6.0) |
| Influenza B | 14 (0.9) |
a
COVID-19, coronavirus disease 2019; HCoV, human coronavirus.
b
Data are presented as No. (percentage).
c
Influenza vaccination was defined using electronic health records within 1 y before enrollment in the parent study.
d
Pneumococcal vaccination was defined using electronic health records before enrollment in the parent study.