Table 1. Median attack ratio and 95% credibility intervals calculated according to (13).
| †Year | ‡Cases | median Attack Ratio | ‡S0 | Circulating Serotypes |
|---|---|---|---|---|
| 1996 | 0.066 | 0.39 (0.17–0.54) | 0.171 (0.12–0.38) | DEN-1 and 213 |
| 1997 | 0.238 | 0.87 (0.74–0.87) | 0.273 (0.27–0.32) | DEN-1 and 213 |
| 1998 | 0.0708 | 0.5 (0.49–0.5) | 0.142 (0.14–0.14) | DEN-1 and 213 |
| 1999 | 0.0371 | 0.11 (0.037–0.2) | 0.345 (0.18–1.0) | DEN-1, 2 and 314 |
| 2000 | 0.394 | 0.25 (0.24–0.27) | 1.55 (1.5–1.6) | DEN-1, 2 and 314 |
| 2001 | 2.38 | 0.48 (0.47–0.49) | 4.95 (4.8–5.1) | DEN-1, 2 and 314 |
| 2005 | 0.217 | 0.15 (0.1–0.21) | 1.47 (1.0–2.1) | |
| 2006 | 0.315 | 0.11 (0.08–0.14) | 2.81 (2.2–3.7) | DEN-215 |
| 2007 | 2.03 | 0.15 (0.15–0.15) | 13.5 (13.0–14.01) | DEN-215 |
| 2008 | 0.0923 | 0.14 (0.031–0.31) | 0.672 (0.3–2.4) | DEN-215 |
| 2010 | 0.831 | 0.18 (0.17–0.19) | 4.54 (4.3–4.8) | DEN-215 |
| 2011 | 1.85 | 0.086 (0.082–0.094) | 21.5 (20.0–23.0) | DEN-1, 2 and 415 |
| 2012 | 0.864 | 0.14 (0.13–0.15) | 6.21 (5.8–6.8) |
Values are presented as percentage of total population. †Year corresponds to the start of the epidemic, but the peak of cases may occur in the following year. ‡percentage of population. These results show considerable variation in AR between epidemics, consistent with the accquiring and loss of serotype-specific immunity.