Table 1.
Total contacts, total infected contacts and related to total number per infected persons (IP) in the booster-vaccinated group (BVG) vs. the fully vaccinated group (FVG) vs. the unvaccinated control group (UCG).
| Group (n) | Mean | SD | p-Value * | Range | Median | p-Value ** | |
|---|---|---|---|---|---|---|---|
| Age (yrs.) | BVG (202) | 36.80 | 12.90 | 1.000 | 18–93 | 34.0 | 1.000 |
| FVG (202) | 36.70 | 12.60 | 18–75 | 34.0 | |||
| UCG (202) | 36.90 | 13.00 | 18–96 | 34.0 | |||
| Number of contacts per IP † | BVG (202) | 1.01 | 1.79 | 0.680 | 0–11 | 0 | 0.456 |
| FVG (202) | 1.03 | 1.75 | 0–15 | 0 | |||
| UCG (202) | 0.96 | 1.80 | 0–18 | 0 | |||
| Number of infected contacts per IP ‡ | BVG (83) | 0.86 | 0.96 | 0.115 | 0–5 | 1 | 0.041 |
| FVG (95) | 1.08 | 1.07 | 0–5 | 1 | |||
| UCG (86) | 1.08 | 0.91 | 0–3 | 1 | |||
| Number of infected contacts to total number of contacts per IP ‡ | BVG (83) | 0.42 | 0.42 | 0.054 | 0–1 | 0.33 | 0.004 |
| FVG (95) | 0.57 | 0.44 | 0–1 | 0.57 | |||
| UCG (86) | 0.56 | 0.43 | 0–1 | 0.58 |
* Calculated with Kruskal–Wallis non-parametric ANOVA. ** Calculated with the median test. † Persons who did not indicate close contacts were also integrated in order not to distort the number; ‡ only taken into calculation if close contacts were indicated; yrs. = years, IP = infected person.