Table 1.
Time from onset of symptoms to admission to hospital, laboratory confirmation, admission to ICU, receive antiviral therapy, stop shedding virus and length of stay associated with pandemic influenza A
| Time period | Cases N | Mean (d) | Median (d) | Min (d) | Max (d) |
|---|---|---|---|---|---|
| Onset of symptoms to admission to hospital* | 70 | 6.0 | 5 | 1 | 20 |
| Onset of symptoms to laboratory confirmation** | 80 | 6.4 | 5 | 1 | 20 |
| Length of stay in hospital * | 70 | 10.7 | 9 | 2 | 32 |
| Onset of symptoms to admission to ICU | 24 | 7.1 | 7 | 1 | 15 |
| Length of stay in ICU | 24 | 7.6 | 6 | 1 | 24 |
| Length of ventilator support | 10 | 10.4 | 8.5 | 4 | 19 |
| Admission to receive antiviral therapy (Oseltamivir) | 67 | 1.7 | 1 | 1 | 12 |
| Onset of symptoms to receive antiviral therapy (Oseltamivir) | 67 | 6.9 | 6 | 1 | 18 |
| Length of shedding virus † | 41 | 11.4 | 11 | 2 | 21 |
| Pyretolysis after receiving oseltamivir | 46 | 2.7 | 1 | 1 | 28 |
ICU Intensive care unit
* Ten cases were excluded because they were nosocomial influenza A virus infection
** Time to laboratory confirmation is longer than time to admission, reflecting the time taken for laboratory confirmation
† Length of virus shedding was calculated as the time from onset of symptoms to the first date of 3 d of continuous negativity