Subsequently the fever rose again, and serious complications generally developed (pulmonary, cardio-circulatory, neurological, etc.), resulting in death in up to 50% of cases.
Pozneje je telesna temperatura ponovno narasla in običajno so se pojavili hudi zapleti (pljučni, kardiocirkulatorni, nevrološki itd.), ki so se v do 50 % primerov zaključili s smrtjo.