Of course, the research of Zhang [57] and Mao et al. [58] found that IL-6 expression would also increase in influenza and viral pneumonia, and the research of Zhang J et al. showed that IL-6 can be an important factor to predict the severity of influenza related pneumonia, but whether IL-6 contributes to OD in these diseases has yet to be investigated. Here, IL6 is linked to susceptibility to pneumonia measurement.