TABLE 1.
HCMV force of infection, basic reproductive rates, and average ages of infection in Shanghai, China
| Shanghai population characteristic | Force of infectiona (95% CI) | Basic reproductive rate (95% CI) | Average age (yr) of infectionb (95% CI) |
|---|---|---|---|
| Entire Shanghai population | 8.04 (6.36-9.72) | 5.65 (4.50-6.81) | |
| Aged >1 to 25 yr | 12.69 (11.49-13.90) | 8.89 (8.05-9.73) | 7.87 (7.19-8.68) |
| Total males | 7.69 (5.59-9.78) | 5.41 (3.99-6.86) | |
| Males, >1 to 20 yr | 13.40 (10.20-16.59) | 9.38 (7.15-11.61) | 7.46 (6.03-9.75) |
| Total females | 9.16 (7.59-10.72) | 6.42 (5.34-7.51) | |
| Females, >1 to 25 yr | 13.30 (10.23-16.36) | 9.31 (7.17-11.45) | 7.52 (6.11-9.72) |
a
Number of individuals infected by HCMV per 100 susceptible individuals per year. If the relevant confidence intervals did not overlap, the parameters based on the different groups were considered to have statistical difference.
b
Since the average age of infection was less than 25 years based on the overall force of infection, it should be calculated more accurately according to the force of infection among >1- to 25-year-olds.