Shoulder injury related to vaccine administration (SIRVA) describes a complication of incorrect immunisation technique whereby a vaccine is injected too high above the deltoid muscle. Implications of SIRVA include persisting pain and limited range of movement, uncertain seroprotection due to the incorrect site of administration, as well costly outcomes for the patient due to diagnostic imaging and interventions.. For tips on avoiding SIRVA please refer to the following resources:  

Australian Immunisation Handbook: avoiding shoulder injury related to vaccine administration
MVEC: administration of injected vaccines- correct technique