Abstract              Background: Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. It is usually caused by infection with viruses or bacteria and less commonly other microorganisms, certain drugs and other conditions such as autoimmune diseases. Aims and Objective: To study the incidence, profile and seasonal trend of pneumonia observed among the patients admitted in tertiary care center. Materials and Method: All the cases admitted in the institute during March 2014 to Feb. 2015 were selected. Out of them cases of pneumonia were studied in detail. During the study duration total 6791 patients were admitted in the institute, out of them 243 were suffering from pneumonia. The detail information of each case was obtained from the record and entered in a prestructured proforma, which included age, sex and presenting complaints. Details about general and systemic examination were also recorded. Data records obtained also included variables as month of admission, month of discharge and year of admission. Results: Out of 6791 admission 243 were diagnosed to be suffering from pneumonia. Thus the incidence of pneumonia was 35.78/1000patients. The most common presenting feature was fever, cough, tachycardia and chest pain (95.88%, 97.94%, 88.89% and 69.14% respectively). Majority of the patients suffering from pneumonia were young adults in the age group of 21 to 40 years (53.5%) followed by 41 to 60 years (32.51%) and ≥61years (12.76%). The incidence of pneumonia among male was more as compared to female. While studying the seasonal trend of pneumonia, it was seen that the incidence of pneumonia was more in winter as compared to summer season. Conclusion: The incidence of pneumonia was 35.78/1000patients. The incidence was more in elderly male with peak incidence in winter season.

Key Words: pneumonia, incidence, seasonal variation, clinical profile.