No differences were noted in serum levels of IL-4 and IL-6. mRNA quantitation from blood clots of the same patients showed relatively elevated levels of TNF-alpha and IFN-alpha in samples from EHF patients.
Surprisingly, the levels of tumor necrosis factor- alpha and interferon (IFN)- gamma , which had been found to be increased in patients with fatal Zaire Ebola virus infection, were not increased in any of the patients with SEBOV infection.