It started with my son (8yr) and myself. We all started to have throat irritation and continous cough. Upon consulting with doctor doctor diagnoized it as pnemonia just by stethoscope and suggested zynthomycin antibiotics. I used Bactrium for 5 days and I am healed. Now, slowly this started to affect my wife with severe fever, throat pain, running nose, headache and body pains. My 55 year old mother-in-law who is a diabetic has throat pain and unable to swallow the solid food and now she has red eyes. What is the cause? Any remedies please? She is taking Erithromycin + B-complex from 2 days.