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Published on: June 11, 2012
Hyperglycemia Post-Influenza Vaccine in Patients With Diabetes
Abigail L Hulsizer1,2, Amy P Witte3,2, Rebecca L Attridge4,2
1Department of Pharmacotherapy, University of North Texas System College of Pharmacy, Fort Worth, TX, USA.
Post-influenza vaccination, hyperglycemia was observed within 24 hours in patients with diabetes. This transient hyperglycemia resolved within two days, addressing concerns that may lower flu vaccination rates.
Area of Science:
- Endocrinology
- Immunology
- Public Health
Background:
- Over 350 reports of post-influenza vaccine hyperglycemia exist in the Vaccine Adverse Effect Reporting System.
- Limited case reports and an unclear mechanism highlight the need for further investigation into post-vaccination hyperglycemia.
- This study addresses a gap in understanding the effects of influenza vaccination on blood glucose levels in diabetic patients.
Purpose of the Study:
- To determine the incidence of hyperglycemia within 24 hours following influenza vaccination.
- To assess the transient nature of post-vaccination hyperglycemia over a four-day period.
- To provide data for improved patient counseling and encourage flu vaccination among individuals with diabetes.
Main Methods:
- A multicenter prospective cohort study involving 34 diabetic patients (age ≥ 18) who monitor blood glucose daily.
- Fasting blood glucose and hemoglobin A1c were measured pre-vaccination.
- Blood glucose was monitored within 24 hours post-vaccination and daily for four days.
Main Results:
- Median fasting glucose increased significantly from 140 mg/dL pre-vaccination to 203 mg/dL within 24 hours post-vaccination (P < 0.0001).
- Hyperglycemia was observed in the first 24 hours after vaccination.
- Blood glucose levels returned to baseline by post-vaccination day 2, indicating a transient effect.
Conclusions:
- Influenza vaccination can cause transient hyperglycemia in diabetic patients, typically resolving within two days.
- Understanding this temporary effect can alleviate patient concerns and potentially improve influenza vaccine uptake in this population.
- This research supports evidence-based counseling for diabetic patients regarding the influenza vaccine.
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