Results: Vitamin D deficiency and low hemoglobin level were positively correlated with the severity
of ALRTIs (r = 0.798 and P = 0.001) and (r =0.708, P =0.028), respectively. Low vitamin D
level was significantly correlated with low hemoglobin level (r = 0.708, P = 0.028).
Conclusion: Vitamin D deficiency was associated with severity of ALRTIs. Low hemoglobin level
was more prevalent in those children. Improving the nutritional status in children by preventing
vitamin D deficiency and low hemoglobin might influence the outcome of children with ALRTI