Intramuscular injections and effects

This cluster of papers focuses on the techniques, complications, and best practices related to intramuscular injections, particularly in the context of vaccine administration. It covers topics such as shoulder injuries, Nicolau Syndrome, injection site pain management, and the impact of injection techniques on immunogenicity and adverse reactions. The cluster also explores the challenges of administering intramuscular injections in specific populations, such as obese individuals and infants.