Using detailed case studies, an Indian research team showed a statistically significant reduction in the incidence of upper respiratory tract infections in children under the age of five. Each child in the study was treated with a remedy individualized to the child.
The study is published in Complementary Therapies In Clinical Practice (Homoeopathic treatment of upper respiratory tract infections in children: evaluation of thirty case series. Complementary Therapies In Clinical Practice, 2010;16(2):101-8).