TNF and susceptibility to pneumonia measurement: Based on the data of network pharmacology analysis, the top 10 pathways (according to p-value) related to pneumonia were as follows: chemokine signaling, MAPK signaling, TNF signaling, FoxO signaling, Toll-like receptor signaling, autophagy-animal, VEGF signaling, NF-κB signaling, mTOR signaling, and NOD-like receptor.