Table 3. Estimated age-specific under-reporting factors.

Age group (years)	Estimated age-group-specific under-reporting factor*
0 -<10	105.13
10 -<20	91.97
20 -<30	148.40
30 -<40	154.47
40 -<50	181.68
50+	216.11

* For example a factor of 105.13 indicates that there were 105.13 times more symptomatic cases than were reported.