Most common cause of pneumonia in children less than 2 years is ?: (A) RSV, (B) Streptococcus aureus, (C) Staphylococcus aureus, (D) Klebsiella
Answer is A. Respiratory syncytial virus is the most impoant cause of pneumonia in children less than 2 years of age.At other ages ,influenza, parainfluenza, adeno virus are common. Bacteria causing pneumonia are klebsiella, S.pneumonia, E.coli, H.influenza, staphylococci, Atypical organisms like Mycoplasma and Pneumocystis carinii. Ref : ESSENTIAL PEDIATRICS,O.P.GHAI,PG NO:352,7th edition