Research Article
Lesson Learned from the Emergence of Influenza Pandemic H1N1 in 2009 in Indonesia: The Importance of Influenza-Like Illness (ILI) Surveillance
Table 1
Characteristics of influenza A cases from ILI surveillance in 2009 in Indonesia.
| | | ILI Total cases | Flu A negative | Flu A positive |
| | Outpatients | 3254 | 2895 (88.97) | 359 (11.03) | | Flu A (H1N1pdm09) | | | 187 (52.08) | | Flu A (H3N2) | | | 41 (11.42) | | Flu A (H1N1human) | | | 42 (11.69) | | Flu A unsubtypeable | | | 89 (24.79) | | Gender | | | | | Male | 1659 (50.98) | 1469 (88.55) | 190 (11.45) | | Female | 1595 (49.02) | 1426 (89.40) | 169 (10.60) | | Age | | | | | 0–5 y.o. | 908 (27.90) | 850 (93.61) | 58 (6.39) | | 6–14 y.o. | 1311 (40.29) | 1125 (85.81) | 186 (14.19) | | 15–24 y.o. | 354 (10.88) | 292 (82.49) | 62 (17.51) | | 25 y.o. | 681 (20.93) | 628 (92.22) | 53 (7.78) |
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Y.o: years old.
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