An intramuscular injection delivers medication into a muscle. Doctors frequently use intramuscular injections to administer vaccines and certain other drugs. Injection sites include the upper arm, hip ...
TOPSHOT - Nurse Practitioner Terri Welch administers a dose of the Pfizer-BioNTech Covid-19 vaccine to a patient at the Haxby and Wigginton Group Medical Practice in Haxby, northern England on ...