Age group (years) All exposed cases (symptomatic or not) Symptomatic cases onlyss Frequency (%) of symptomatic cases related to exposed cases LLP TLL p LLP TLL p LLP TLL p n % n % n % n % Pediatrics                           <1 487 6.5 300 4.5 <10-3 344 6.9 121 4.0 <10-3 70.6 40.3 . 1 459 6.1 388 5.8 304 6.1 162 5.4 66.2 41.8 . 2-3 3,541 47.3 3,248 48.4 2,397 47.8 1,297 42.9 67.7 39.9 . 4-5 2,510 33.5 1,508 22.5 1,654 33.0 697 23.1 65.9 46.2 . 6-10 261 3.5 142 2.1 168 3.4 74 2.4 64.4 52.1 . 11-14 40 0.5 60 0.9 23 0.5 34 1.1 57.5 56.7 . 15-19 67 0.9 122 1.8 40 0.8 56 1.9 59.7 45.9 . Total 7,365 98.4 5,758 86 4,930 98.4 2,441 80.8 67.3 42.4   Adults                       20-29 51 0.7 237 3.5 35 0.7 147 4.9 68.6 62.0 . 30-69 47 0.6 562 8.4 32 0.6 355 11.7 68.1 63.2 . >70 20 0.3 142 2.1 13 0.3 80 2.6 65.0 56.3 . Total 118 1.6 941 14   80 1.6 582 19.2   62.5 61.8   Grand Total 7,483* 100 6,709† 100   5,010‡ 100 3,023§ 100   67.0 45.1 <10-3

*79 missing data; † 66 missing data; ‡39 missing data; §80 missing data

Table 2: Distribution of cases of exposure, symptomatic cases and frequency (%) of symptomatic cases reported to all exposed cases, according to age groups: LLP versus TLL.