From: Onset of a pandemic: characterizing the initial phase of the swine flu (H1N1) epidemic in Israel
 |  | Infectee | |||
---|---|---|---|---|---|
 |  | 0-18 | 19-30 | above 30 | Sum. |
 | 0-18 | 46 (36.1) | 6 (13.7) | 18 (20.1) | 70 |
infector | 19-30 | 6 (14.9) | 15 (5.7) | 8 (8.3) | 29 |
 | above 30 | 11 (11.9) | 3 (4.5) | 9 (6.6) | 23 |
 | Sum. | 63 | 24 | 35 | 122 |