Objectives: There are 2 types of the ARTI (Acute Respiratory Tract Infections) as upper RTI & lower RTI. These acute diseases are very frequent in the childhood period. The objective of this research work was to find out the risk factor for the lower RTI (Respiratory Tract Infections) in our areas. Methodology: Total 350 children who appeared at Pediatric ward of Allied Hospital Faisalabad, suffering from lower RTI were the part of this study. The record of the information about their checkups,

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... previous history, family history of infection & data about the factors of environment, maintained. All these information recoded on a special organized Performa. Results: The evaluation of the deficiency of vaccination, duration of feeding through breasts, age at the time start of milk of cow, asthma history in family & food allergy, the amount of the admitted patients in same room, amount of the people who were living in the same house and smoking cigarettes around those children carried out for the availability of the lower respiratory tract infections & risk factors of this complication observed as 1.690, 1.710, 1.610, 1.690, 1.20, 1.470, 1.560 and 2.630 ties increased. Conclusion: Standard clinical diagnosis of disease, precise & proper use of antibiotic, proper nutrition, betterment in the social and economic condition and purging of the factors of environment will decrease the rate of morbidity & mortality among children because of lower RTIs. Keywords: Food Allergy, Asthma, Methodology, Environmental, Factors, Nutrition, Allergy, Complication, Clinical.