... contributionsOO and JA analyzed and interpreted the patient data. SJ, SC, EB, MS, and MZ were major contributors in writing the manuscript. All authors read and approved the final manuscript.Competing interestsThe ... vaccine are not common [1-6]. Factorsthat play a role in the development of vaccine-relatedcomplications include age and immune status of thevaccinee, route of administration and technique, and quality, ... Esam Al Banyan2,Mohammad Al Shaalan2 and Mohammad Zamakhshary1AbstractIntroduction: Thigh swelling in an infant can be a symptom of a simple benign condition or a life-threateningcondition....