Tetanus immunity in emergency department patients

Area of Science:

• Public Health
• Immunology
• Epidemiology

Background:

• Tetanus remains a public health concern, necessitating adequate population immunity.
• Assessing tetanus immunity in emergency department (ED) settings is crucial for timely intervention.

Purpose of the Study:

• To evaluate tetanus antibody levels in adult patients presenting to emergency departments.
• To identify demographic factors associated with inadequate tetanus immunity.

Main Methods:

• Blood samples were collected from 278 patients at two D.C. emergency departments.
• Tetanus antitoxin assays were performed using hemagglutination at the Centers for Disease Control.
• Demographic data were collected and analyzed in relation to antibody levels.

Main Results:

• 10% of patients (27/278) had protective tetanus antibody levels below 0.01 U/mL.
• Inadequate immunity was significantly associated with advanced age, lower education, female sex, and non-US origin.
• Patient recall of immunization history was unreliable for determining immunity status.

Conclusions:

• A notable proportion of adult ED patients lack protective tetanus immunity.
• Targeted immunization strategies for specific demographic groups are warranted in ED settings.
• Relying on patient self-reported immunization history is insufficient for ensuring adequate tetanus protection.