Don't know if this approach to cytokine storms has show promise beyond the early press releases...
""During flu infection the immune system has an ’all hands on deck’ attitude to the viral assault. But it’s this that causes most of the damage. The exaggerated immune response produces inflammatory molecules that lead to what’s known as a ’cytokine storm’. Essentially too many cells clog up the airways and prevent efficient transfer of oxygen into the bloodstream. By selectively reducing this cellular load we’ve shown it’s possible to eliminate clinical symptoms whilst effectively tackling and clearing the infection."
http://www.innovations-report.de/html/berichte/medizin_gesundheit/bericht-22588.html