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Tetanus and Diphtheria Toxoids Adsorbed

National Institute of Allergy and Infectious Diseases (NIAID) · FDA-approved active Biologic

This vaccine stimulates the immune system to produce antibodies against tetanus and diphtheria toxins by presenting inactivated toxoids as antigens.

This vaccine stimulates the immune system to produce antibodies against tetanus and diphtheria toxins by presenting inactivated toxoids as antigens. Used for Prevention of tetanus, Prevention of diphtheria.

At a glance

Generic nameTetanus and Diphtheria Toxoids Adsorbed
Also known asDECAVAC, Td, Tetanus and Diphtheria Toxoids Adsorbed for Adult Use
SponsorNational Institute of Allergy and Infectious Diseases (NIAID)
Drug classToxoid vaccine
ModalityBiologic
Therapeutic areaImmunology
PhaseFDA-approved

Mechanism of action

Tetanus and diphtheria toxoids are chemically inactivated bacterial toxins that cannot cause disease but retain immunogenicity. When administered, they trigger B and T cell responses that generate protective antibodies (antitoxins) against the respective toxins produced by Clostridium tetani and Corynebacterium diphtheriae. The adsorbed formulation enhances immunogenicity by binding toxoids to an aluminum salt adjuvant.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results