The variables associated with death ( ; p = 0.08) and hyperbilirubinaemia (77.8% vs 40.4%; p = 0.066), although more frequent in patients who died, did not reach statistical significance. The duration of the symptoms before admission has no statistical significance when considering the risk of death (p = 0.82), but the same was not true when we analysed the time since the patients' arrival from the endemic area to diagnosis, which was statistically associated with a worse prognosis (p = 0.02).