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English⧼Colon⧽ ijms-18-00556-f002: Airway inflammation due to hRSV infection. Upon hRSV infection, airway epithelial cells, dendritic cells and macrophages recognize hRSV. Such recognition triggers a downstream innate response, which eventually will result in the production of cytokines and chemokines such as thymic stromal lymphopoetin (TSLP), IL-13, IL-25, Il-10, IL-4, IL-5 and IL-6. Likewise, such hRSV infection promotes the recruitment of neutrophils, eosinophils and T cells. Such inflammatory response results in Th-2 and Th-7 response, mucus production and lung damage.