Shoulder Injury Related to Vaccine Administration (SIRVA)
We are seeing an increase in shoulder injuries related to vaccine administration (SIRVA). Shoulder injuries can be caused by vaccines like the flu shot, tetanus shot or the pneumonia vaccine. More commonly, though, we have seen more SIRVA cases related to the influenza vaccine, and usually, the injury is related to the needle being injected too high into the shoulder.
Occasionally, the syringe can also be inserted too far into the shoulder muscle. Even if the bursa is not punctured, an injection made too deep into the shoulder can lead to other problems like painful tendon and nerve injuries.
COMMON SIRVA INJURIES
Frozen shoulder occurs when the joint spaces are normal but the shoulder motion is limited and painful because the joint capsule has become inflamed and contracted.
Bursitis occurs when there is an inflammation of the bursa sac, the fluid-filled cartilage that cushions the bone structures of the shoulder. This injury happens when the needle punctures the bursa sac.
Tendinitis presents itself as inflammation of the tendons that connect the muscles of the shoulder to the bone. Tendinitis is also a rotator cuff injury and can be referred to as impingement syndrome.