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Shoulder injury is a rare potential side effect of vaccination

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A retrospective cohort study found that less than 1 in 10,000 patients who received intramuscular injections into the deltoid muscle between April 2016 and December 2017 had shoulder injuries (prior to COVID-19). Pandemic). The authors state that given the heavy burden of shoulder condition, clinicians need to pay attention to factors that may further increase risk. Although shoulder conditions may be preventable if caused by improper vaccination, their study has not identified the cause of vaccine-related shoulder injuries.The survey results are published at Annual report of internal medicine..

The National Vaccine Injury Compensation Program (VICP) provides financial compensation to those who have had serious adverse effects listed in the Vaccine Injury Compensation Table. In 2017, based on compelling evidence of a causal link between vaccination and deltoid bursitis, shoulder injury (SIRVA) associated with vaccination was added to the Vaccine Injury table. In addition to bursitis, other shoulder conditions are associated with vaccination. The proposed mechanism is that when the vaccine is injected into the shoulder joint instead of the deltoid muscle, the shoulder condition is triggered by an immune response. However, epidemiological data on shoulder condition after vaccination are limited.

Researchers at the Kaiser Permanente South California Research and Evaluation Office estimated the risk of shoulder condition after vaccination and evaluated more than 3.7 million doses of vaccination during the study to assess possible risk factors. I studied health records. Use a natural language processing (NLP) algorithm to identify potential shoulder conditions in vaccinated people with a diagnostic code for shoulder disorders and compare the characteristics of people with and without shoulder conditions. Did. Of the more than 3.7 million vaccinations, 371 cases of shoulder condition have been confirmed, with an estimated incidence of 0.99 per 10,000 adult vaccinations. The incidence of pediatric recipients was even lower, with only 4 shoulder conditions after more than 750,000 vaccinations.

Researchers also investigated risk factors for developing shoulder conditions, including adult, elderly, and female gender, increased outpatient visits during the 6 months prior to vaccination, reduced comorbidities, and pneumococcal conjugate vaccine. The risk of shoulder condition was found to be associated with higher inoculations. Among the influenza vaccines, the 4-valent vaccine was associated with an increased risk of shoulder condition.Co-vaccination was associated with higher risk shoulder The condition of the elderly.



For more information:
Risk of shoulder condition after vaccination: a population-based study using real-world data, Annual report of internal medicine (2022). www.acpjournals.org/doi/10.7326/M21-3023

Quote: Shoulder injury is a rare potential side effect of vaccination (March 21, 2022), March 21, 2022 https://medicalxpress.com/news/2022-03-shoulder-injury-rare Obtained from -potential-side.html.

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Shoulder injury is a rare potential side effect of vaccination

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