Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Parameters for the infection of recipients
| Age bracket, years | Fraction of recipients (f[n])* | Infectious dose
|
|
|---|---|---|---|
| ID50 | ID10 | ||
| <25 | 0.05 | 15,000 | 4,500 |
| 25–44 | 0.35 | 10,000 | 3,000 |
| 45–65 | 0.35 | 6,000 | 1,800 |
| >65 | 0.25 | 1,500 | 450 |
Estimate of the proportions of all likely mail recipients.
