Tenivac

Drug overview for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf):

Generic name: TETANUS AND DIPHTHERIA TOXOIDS, ADSORBED, ADULT/PF (dip-THEER-ee-uh AND TET-un-us)
Drug class: Diphtheria Toxoid
Therapeutic class: Biologicals

Tetanus and diphtheria toxoids adsorbed (Td) is a fixed-combination preparation that contains tetanus and diphtheria toxins (toxoids) adsorbed onto an aluminum adjuvant; it is used to stimulate active immunity to diphtheria and tetanus.

No enhanced Uses information available for this drug.

DRUG IMAGES

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The following indications for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf) have been approved by the FDA:

Indications:
Tetanus-diphtheria prevention

Professional Synonyms:
Tetanus and diphtheria prevention
Tetanus and diphtheria prophylaxis

The following dosing information is available for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf):

Dosing
Administration
TENIVAC
Generic

The usual dose of Td is 0.5 mL.

Tetanus and diphtheria toxoids adsorbed (Td) are administered only by IM injection in 0.5-mL doses. Do not administer IV, subcutaneously, or intradermally.

Each 0.5 mL of Td contains 2 Lf units of diphtheria toxoid adsorbed and 5 Lf units of tetanus toxoid adsorbed. To ensure delivery into muscle, administer IM injections at a 90degrees angle to the skin using a needle length appropriate for the individual's age and body mass, thickness of adipose tissue and muscle at the injection site, and the injection technique.

The preferred site of injection is the deltoid muscle. Do not inject into the gluteal area or areas where there may be a major nerve trunk. Before use, shake the single-dose vial or syringe well until a uniform, white, cloudy suspension results.

Inspect visually for particulate matter and discoloration prior to administration. Discard the vaccine if it contains particulate matter, is discolored, or cannot be resuspended. Do not reconstitute or mix with any other vaccine.

Discard any unused portion. Store at 2-8degreesC. Do not freeze and do not use product exposed to freezing.

Td that has been mishandled or has not been stored at the recommended temperature should not be administered. The complete primary vaccination series and recommended booster doses must be administered to ensure optimal protection against diphtheria and tetanus. Interruption of the primary immunization series resulting in intervals between doses longer than recommended do not interfere with the final immunity achieved; therefore, it is not necessary to give additional doses or to start the series over.

Dosing information for TENIVAC
DRUG LABEL	DOSING TYPE	DOSING INSTRUCTIONS
TENIVAC SYRINGE	Maintenance	Adults inject 0.5 milliliter by intramuscular route once

No generic dosing information available.

The following drug interaction information is available for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf):

Contraindicated
Severe
Moderate

There are 0 contraindications.

There are 1 severe interactions. These drug interactions can produce serious consequences in most patients. Actions required for severe interactions include, but are not limited to, discontinuing one or both agents, adjusting dosage, altering administration scheduling, and providing additional patient monitoring. Review the full interaction monograph for more information.

Drug Interaction	Drug Names
Non-Live or Non-Replicating Vaccines/Teplizumab SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Teplizumab may cause lymphopenia and alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a non-live vaccine within the 2 weeks prior to, during, or for 6 weeks following teplizumab therapy may result in decreased effectiveness of the vaccine.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating teplizumab therapy. The manufacturer of teplizumab states that non-live vaccines (e.g., inactivated or mRNA vaccines) are not recommended within the 2 weeks prior to, during, or for 6 weeks after stopping teplizumab therapy.(1) The immune response to non-live vaccines should be monitored in patients who receive teplizumab within these time frames. The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) For COVID-19 vaccines, the CDC advises planning for vaccination at least 2 weeks before starting or resuming immunosuppressive therapy. Patients should be offered and given a COVID-19 vaccine even if the use and timing of immunosuppressive agents cannot be adjusted. The CDC states that an age-appropriate mRNA COVID-19 vaccine is preferred over the Janssen COVID-19 vaccine for the primary and booster doses for immunocompromised patients. All immunocompromised patients over 5 years of age should receive at least 1 booster dose if eligible. See the CDC's Interim Clinical Considerations for Use of COVID-19 Vaccines for age- and product-specific recommendations.(3) DISCUSSION: Vaccinations may be less effective if administered within 2 weeks before, during, and for 6 weeks following teplizumab therapy.(1)	TZIELD

Drug Interaction

Drug Names

Non-Live or Non-Replicating Vaccines/Teplizumab

SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.

MECHANISM OF ACTION: Teplizumab may cause lymphopenia and alter the immune system's response to vaccines.(1)

CLINICAL EFFECTS: Administration of a non-live vaccine within the 2 weeks prior to, during, or for 6 weeks following teplizumab therapy may result in decreased effectiveness of the vaccine.(1)

PREDISPOSING FACTORS: None determined.

PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating teplizumab therapy. The manufacturer of teplizumab states that non-live vaccines (e.g., inactivated or mRNA vaccines) are not recommended within the 2 weeks prior to, during, or for 6 weeks after stopping teplizumab therapy.(1) The immune response to non-live vaccines should be monitored in patients who receive teplizumab within these time frames.

The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) For COVID-19 vaccines, the CDC advises planning for vaccination at least 2 weeks before starting or resuming immunosuppressive therapy.

Patients should be offered and given a COVID-19 vaccine even if the use and timing of immunosuppressive agents cannot be adjusted. The CDC states that an age-appropriate mRNA COVID-19 vaccine is preferred over the Janssen COVID-19 vaccine for the primary and booster doses for immunocompromised patients. All immunocompromised patients over 5 years of age should receive at least 1 booster dose if eligible. See the CDC's Interim Clinical Considerations for Use of COVID-19 Vaccines for age- and product-specific recommendations.(3)

DISCUSSION: Vaccinations may be less effective if administered within 2 weeks before, during, and for 6 weeks following teplizumab therapy.(1)

TZIELD

There are 8 moderate interactions. The clinician should assess the patient’s characteristics and take action as needed. Actions required for moderate interactions include, but are not limited to, discontinuing one or both agents, adjusting dosage, altering administration.

Drug Interaction	Drug Names
Non-Live or Non-Replicating Vaccines/Fingolimod SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Fingolimod is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a vaccine during and for 2 months following fingolimod therapy may result in decreased effectiveness of the vaccine.(1,2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating fingolimod therapy. The immune response to non-live vaccines should be monitored in patients receiving fingolimod or who have received fingolimod in the previous two months. Vaccinations given during and for 2 months after stopping fingolimod therapy may need to be repeated.(1,2) The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(3) DISCUSSION: Vaccinations may be less effective during and for 2 months following fingolimod therapy(1) however they are considered safe to administer.(2)	FINGOLIMOD, GILENYA, TASCENSO ODT
Non-Live or Non-Replicating Vaccines/Siponimod SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Siponimod is an immunosuppressant and may alter the immune system's response to vaccines.(2) CLINICAL EFFECTS: Administration of a vaccine during and for up to 1 month after discontinuation of siponimod therapy may result in decreased effectiveness of the vaccine. Siponimod treatment should be paused 1 week prior and for 4 weeks after vaccination.(2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating siponimod therapy. The immune response to non-live vaccines should be monitored in patients receiving siponimod or who have received siponimod in the previous week. Vaccinations given during and for up to 1 month after discontinuation of siponimod therapy may need to be repeated.(2) The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(3) DISCUSSION: Vaccinations may be less effective if administered during and for up to 1 month after siponimod treatment(2) however they are considered safe to administer.(1)	MAYZENT
Non-Live or Non-Replicating Vaccines/Satralizumab SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Satralizumab is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a vaccine during satralizumab therapy may result in decreased effectiveness of the vaccine. If possible, non-live vaccines should be administered at least two weeks prior to initiation of satralizumab.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines two weeks prior to initiating satralizumab therapy. The immune response to non-live vaccines should be monitored in patients receiving satralizumab. Vaccinations given during satralizumab therapy may need to be repeated.(1) Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) DISCUSSION: Vaccinations may be less effective if administered during satralizumab treatment.(1)	ENSPRYNG
Non-Live or Non-Replicating Vaccines/Ublituximab SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ublituximab is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a non-live vaccine within 2 weeks before or during ublituximab therapy may result in decreased effectiveness of the vaccine. If possible, non-live vaccines should be administered at least two weeks prior to initiating ublituximab therapy.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer non-live vaccines at least two weeks prior to initiating ublituximab therapy. The immune response to non-live vaccines should be monitored in patients receiving ublituximab. Vaccinations given during ublituximab therapy may need to be repeated.(1) Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) DISCUSSION: Vaccinations may be less effective if administered within 2 weeks before or during ublituximab treatment.(1)	BRIUMVI
Systemic Corticosteroids; Corticotropin/Non-Live or Non-Replicating Vaccines SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Corticosteroids and corticotropin suppress the immune system and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Vaccines administered during or within 2 weeks prior to therapy with corticosteroids or corticotropin may result in decreased effectiveness of the vaccine.(1) PREDISPOSING FACTORS: Patients receiving immunosuppressive doses of corticosteroids or corticotropin for equal to or greater than 14 consecutive days.(1) PATIENT MANAGEMENT: The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed, including those who are receiving or have received high-dose, systemic steroids for greater than or equal to 14 consecutive days. When initiating immunosuppressives doses of corticosteroids, wait 2 weeks after a non-live vaccines is administered. However, if patients require therapy for chronic inflammatory conditions, do not delay therapy due to past vaccines.(1) The immune response to non-live vaccines should be monitored in patients receiving corticosteroids. Vaccinations given during corticosteroid therapy may need to be repeated.(1) Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(1) DISCUSSION: Vaccinations given during and within 2 weeks prior to corticosteroid therapy may be less effective. However they are considered safe to administer.(1) Many clinicians consider a dose equivalent to either 2 mg/kg of body weight or a total of 20 mg/day of prednisone as sufficiently immunosuppressive to raise safety concerns about live-virus vaccines.(1) Immunization procedures may be undertaken in patients receiving corticosteroids when the therapy is short term (less than 2 weeks); low to moderate dose; long-term, alternate-day treatment with short-acting preparations; maintenance physiologic doses (replacement therapy); or administered topically (skin or eyes), by aerosol, or by intra-articular, bursal, or tendon injection.(1)	ACTHAR, ACTHAR SELFJECT, ADRENOCORTICOTROPHIC HORMONE, ALDOSTERONE, ALKINDI SPRINKLE, ANUCORT-HC, ANUSOL-HC, BECLOMETHASONE DIPROPIONATE, BETALOAN SUIK, BETAMETHASONE ACETATE MICRO, BETAMETHASONE ACETATE-SOD PHOS, BETAMETHASONE DIPROPIONATE, BETAMETHASONE SOD PHOS-ACETATE, BETAMETHASONE SOD PHOS-WATER, BETAMETHASONE SODIUM PHOSPHATE, BETAMETHASONE VALERATE, BUDESONIDE, BUDESONIDE DR, BUDESONIDE EC, BUDESONIDE ER, BUDESONIDE MICRONIZED, BUPIVACAINE-DEXAMETH-EPINEPHRN, CELESTONE, CLOBETASOL PROPIONATE MICRO, CORTEF, CORTENEMA, CORTICOTROPHIN, CORTIFOAM, CORTISONE ACETATE, CORTROPHIN, DEFLAZACORT, DEPO-MEDROL, DESONIDE MICRONIZED, DESOXIMETASONE, DESOXYCORTICOSTERONE ACETATE, DEXABLISS, DEXAMETHASONE, DEXAMETHASONE ACETATE, DEXAMETHASONE ACETATE MICRO, DEXAMETHASONE INTENSOL, DEXAMETHASONE ISONICOTINATE, DEXAMETHASONE MICRONIZED, DEXAMETHASONE SOD PHOS-WATER, DEXAMETHASONE SODIUM PHOSPHATE, DEXAMETHASONE-0.9% NACL, DMT SUIK, DOUBLEDEX, EMFLAZA, EOHILIA, FLUDROCORTISONE ACETATE, FLUNISOLIDE, FLUOCINOLONE ACETONIDE, FLUOCINOLONE ACETONIDE MICRO, FLUOCINONIDE MICRONIZED, FLUTICASONE PROPIONATE, FLUTICASONE PROPIONATE MICRO, HEMADY, HEMMOREX-HC, HEXATRIONE, HYDROCORTISONE, HYDROCORTISONE ACETATE, HYDROCORTISONE SOD SUCCINATE, JAYTHARI, KENALOG-10, KENALOG-40, KENALOG-80, KHINDIVI, KYMBEE, LIDOCIDEX-I, MAS CARE-PAK, MEDROL, MEDROLOAN II SUIK, MEDROLOAN SUIK, METHYLPREDNISOLONE, METHYLPREDNISOLONE AC MICRO, METHYLPREDNISOLONE ACETATE, METHYLPREDNISOLONE SODIUM SUCC, MILLIPRED, MILLIPRED DP, MOMETASONE FUROATE, ORAPRED ODT, P-PACK PREDNISONE, PREDNISOLONE, PREDNISOLONE ACETATE MICRONIZE, PREDNISOLONE MICRONIZED, PREDNISOLONE SODIUM PHOS ODT, PREDNISOLONE SODIUM PHOSPHATE, PREDNISONE, PREDNISONE INTENSOL, PREDNISONE MICRONIZED, PROCTOCORT, PYQUVI, SOLU-CORTEF, SOLU-MEDROL, TAPERDEX, TARPEYO, TRIAMCINOLONE, TRIAMCINOLONE ACETONIDE, TRIAMCINOLONE DIACETATE, TRIAMCINOLONE DIACETATE MICRO, TRILOAN II SUIK, TRILOAN SUIK, UCERIS, VERIPRED 20, ZCORT
Non-Live or Non-Replicating Vaccines/Etrasimod SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Etrasimod is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a vaccine during and for up to 5 weeks after discontinuation of etrasimod therapy may result in decreased effectiveness of the vaccine. Etrasimod treatment should be paused 5 weeks prior and for 4 weeks after vaccination.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating etrasimod therapy. The immune response to non-live vaccines should be monitored in patients receiving etrasimod or who have received etrasimod in the previous 5 weeks. Vaccinations given during and for up to 5 weeks after discontinuation of etrasimod therapy may need to be repeated.(1) The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) DISCUSSION: Vaccinations may be less effective if administered during and for up to 5 weeks after etrasimod treatment.(1) However they are considered safe to administer.	VELSIPITY
Non-Live or Non-Replicating Vaccines/Ozanimod SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ozanimod is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a vaccine during and for up to 3 months after discontinuation of ozanimod therapy may result in decreased effectiveness of the vaccine. Ozanimod treatment should be paused 3 months prior and for 1 month after vaccination.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating ozanimod therapy. The immune response to non-live vaccines should be monitored in patients receiving ozanimod or who have received ozanimod in the previous 3 months. Vaccinations given during and for up to 3 months after discontinuation of ozanimod therapy may need to be repeated.(1) The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) DISCUSSION: Vaccinations may be less effective if administered during and for up to 3 months after ozanimod treatment.(1) However they are considered safe to administer.	ZEPOSIA
Non-Live or Non-Replicating Vaccines/Ponesimod SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ponesimod is an immunosuppressant and may alter the immune system's response to vaccines.(1) CLINICAL EFFECTS: Administration of a vaccine during and for up to 2 weeks after discontinuation of ponesimod therapy may result in decreased effectiveness of the vaccine. Ponesimod treatment should be paused 1-2 weeks prior and for 4 weeks after vaccination.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Ideally, administer vaccines prior to initiating ponesimod therapy. The immune response to non-live vaccines should be monitored in patients receiving ponesimod or who have received ponesimod in the previous 2 weeks. Vaccinations given during and for up to 2 weeks after discontinuation of ponesimod therapy may need to be repeated.(1) The Centers for Disease Control's (CDC) Advisory Committee on Immunization Practices (ACIP) states that non-live vaccines should be used with caution in patients who are severely immunosuppressed. Patients who are vaccinated within the 14 days prior to initiating immunosuppressive therapy should be considered unvaccinated and should be revaccinated at least 3 months after immunosuppressive therapy is discontinued when immune competence is restored.(2) DISCUSSION: Vaccinations may be less effective if administered during and for up to 2 weeks after ponesimod treatment.(1) However they are considered safe to administer.	PONVORY

Severe List
High fever >101 degrees fahrenheit

The following adverse reaction information is available for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf):

Overview
Severe
Less Severe

Adverse reaction overview.

The most frequent solicited injection site reaction within 0-3 days following vaccine administration was pain, reported in 78.3% of patients 11-59 years of age and 35.3% of patients >=60 years of age.

The most frequent solicited systemic reaction within 0-3 days following vaccine administration was headache reported in 17.9% of patients. Other common (>=10%) solicited adverse reactions within 0-3 days following vaccine administration were injection site redness, injection site swelling, malaise, muscle weakness, and joint pain.

There are 12 severe adverse reactions.

More Frequent	Less Frequent
Headache disorder	None.

Rare/Very Rare
Anaphylaxis Angioedema Brachial plexus disorder Dyspnea Encephalopathy Erythema multiforme Guillain-barre syndrome Hearing disorder Hypersensitivity drug reaction Localized edema Urticaria

There are 19 less severe adverse reactions.

More Frequent	Less Frequent
Arthralgia Injection site sequelae Malaise Muscle weakness	None.

Rare/Very Rare
Chills Dizziness Fatigue Fever Flushing Hypotension Lymphadenopathy Myalgia Nausea Paresthesia Peripheral edema Skin rash Syncope Tachycardia Vomiting

The following precautions are available for TENIVAC (tetanus and diphtheria toxoids, adsorbed, adult/pf):

Pediatric
Pregnant
Lactation
Geriatric

Safety and efficacy have not been established in infants and children younger than 7 years of age.

Contraindicated

None

Severe Precaution

None

Management or Monitoring Precaution

None

There are no adequate and well-controlled studies of tetanus and diphtheria toxoids adsorbed (Td) in pregnant women in the US. There are insufficient human data on use of the vaccine during pregnancy to establish the presence or absence of a vaccine-associated risk. A developmental toxicity study in rabbits did not demonstrate vaccine-related fetal malformations or variations. ACIP states that there is no evidence to suggest a risk to the fetus from vaccinating pregnant women with non-live virus or bacterial vaccines.

It is not known whether the components of the Td vaccine are excreted in human milk. Data are not available to assess the effect of administration of the vaccine on breast-fed infants or on milk production/excretion. Consider the developmental and health benefits of breastfeeding along with the mother's clinical need for the Td vaccine and any potential adverse effects on the breast-fed child from the vaccine or from the underlying maternal condition.

For preventive vaccines, the underlying maternal condition is susceptibility to disease prevented by the vaccine. ACIP states that breast-feeding is not considered a contraindication for non-live vaccines such as Td.

In a clinical study that included 449 adults 65 years of age or older (including 192 adults 75 years of age or older), the proportion who had seroprotective antibody levels following a dose of Td (Tenivac(R)) was marginally lower for tetanus and lower for diphtheria compared with younger individuals. The rate of solicited adverse events in those 65 years of age and older generally was similar to the rate in younger adults.