Why Are Cases of Shoulder Injuries From Vaccines Increasing?

https://www.wired.com/2015/09/cases-shoulder-injuries-vaccines-increas [snip!]
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Related Content

1. “Onset of Frozen Shoulder Following Pneumococcal and Influenza Vaccinations,” Saleh et al, J Chiropr Med, 2015.
2. “Shoulder injury related to vaccine administration and other injection site events,” Bancsi et al, Can Fam Physician, 2019.

These two articles on PainScience.com cite this item as a source:

1. Complete Guide to Frozen Shoulder
2. Injection infection? Another surprising way to freeze a shoulder