Diphtheria, Pertussis & Tetanus Vaccine
Protect against 3 serious diseases with an important vaccine for every stage of life.

Diphtheria, pertussis, and tetanus are infectious diseases that may cause severe illness and complications—especially in young children, pregnant women, and people who have not received booster vaccinations on schedule.

Today, protection is commonly given as a combination vaccine, such as DTaP, Tdap, or Td/dT, depending on age and individual needs.

❄️ What Are These Diseases?

Diphtheria

A bacterial infection that usually affects the respiratory tract. It may cause:
• Sore throat
• Fever
• Thick membrane in the throat
• Difficulty breathing

This disease is preventable by vaccination. The World Health Organization recommends continued diphtheria-containing vaccines from infancy through adolescence for long-term protection.

Pertussis (Whooping Cough)

A highly contagious respiratory infection. Common symptoms include:
• Severe coughing fits
• Prolonged cough
• Repeated coughing spells

In infants, serious complications can occur. Pertussis is one of the vaccine-preventable diseases most commonly seen in children under 1 year old.

Tetanus

Caused by toxins from bacteria entering the body through wounds. Symptoms may include:
• Muscle stiffness and spasms
• Difficulty opening the mouth
• Life-threatening complications

Tetanus booster vaccination remains important throughout life.

What Does This Vaccine Protect Against?

This vaccine group helps protect against:
✔ Diphtheria
✔ Pertussis
✔ Tetanus

What’s the Difference Between DTaP, Tdap, and Td?

DTaP

Used for young children. Usually recommended in 5 doses at approximately:
• 2 months
• 4 months
• 6 months
• 15–18 months
• 4–6 years

Tdap

Used for children aged 7 years and older, adolescents, and adults.

• Adolescents should receive 1 dose at age 11–12 years
• Adults who have never received Tdap should receive 1 dose

Td / Tdap Booster

After that, booster doses are usually recommended every 10 years to maintain protection.

Should Pregnant Women Receive It?

Yes. Pregnant women should receive Tdap during every pregnancy.
It is commonly recommended in the early third trimester to help pass immunity to the newborn baby, who is at highest risk of severe pertussis complications.

Who Should Consider Vaccination?

This vaccine is recommended for:
• Young children according to routine schedule
• Older children and teenagers due for boosters
• Adults who never received Tdap
• Pregnant women during every pregnancy
• People with wounds who may need tetanus protection assessment by a doctor

Possible Side Effects After Vaccination

Common mild side effects may include:
• Pain, swelling, or redness at injection site
• Low-grade fever
• Fussiness (in children)
• Temporary tiredness

These symptoms usually resolve on their own.

People with a history of severe vaccine allergy or certain neurological conditions should inform their doctor before vaccination.

Why Are Booster Shots Important?

Even if vaccinated during childhood, immunity may decrease over time—especially against pertussis and tetanus.

Booster doses help:
✔ Reduce the risk of severe disease
✔ Maintain long-term immunity
✔ Reduce transmission to loved ones, especially infants and older adults