Pneumonia is an infection in your lungs caused by bacteria, viruses or fungi. Pneumonia causes your lung tissue to swell (inflammation) and can cause fluid or pus in your lungs. It makes Frontiers Glutathione deficiency in the pathogenesis of SARS CoV 2 infection and its effects upon the host immune response in severe COVID 19 disease ROS induced metabolic reprogramming to one carbon metabolism and S adenosylmethionine mediated epigenetic modification in IL 10 producing B cells for the resolution of pneumonia Cellular & Molecular Immunology Acetylcysteine and budesonide for the treatment of refractory Mycoplasma pneumoniae pneumonia in children: a clinical observation Italian Journal of Pediatrics Springer Nature Link