DTP Vaccine: Against Pertussis, Diphtheria, Tetanus, Reaction

The DTP vaccine is one of the main childhood shots and at the same time a frequent source of parental worry: will there be a fever, is it normal, why so many doses. In fact DTP protects against three serious diseases at once, and most reactions to it are expected and safe. Here is what DTP protects against, the schedule and what counts as a normal reaction.

Which Diseases DTP Protects Against

The abbreviation stands for its components: a vaccine against pertussis, diphtheria and tetanus. All three are dangerous, especially for children: pertussis with coughing fits and breathing pauses in infants, diphtheria with damage to breathing and the heart, tetanus with fatal spasms. One shot protects against all three.

The DTP Schedule in Children

The course consists of several doses in the first to second year of life, with later boosters per the national schedule. It is the repetition that builds lasting immunity. The exact timing and product (whole-cell or acellular vaccine) are decided by a doctor based on the schedule and the child's condition.

The Reaction to DTP and Fever After

A normal reaction: soreness, redness and firmness at the injection site, a moderate fever, and fussiness for 1–2 days. This is an expected response of the immune system, not a complication. A doctor can advise in advance how to ease it (a fever reducer if needed). The reaction usually passes quickly.

Boosters: Td and Adults

Immunity weakens over time, so boosters are needed. In older children and adults a version without the pertussis component (Td) is often used — mainly to maintain protection against diphtheria and tetanus. Adults are advised a tetanus and diphtheria booster about every 10 years.

Complications and How to Tell Them from a Normal Reaction

True complications are rare. Warning signs are: a very high fever that will not come down, marked swelling and redness beyond a certain size, unusual lethargy, seizures, allergic reactions. In these cases see a doctor. An ordinary moderate fever and local soreness are within the norm.

Contraindications and Deferral

DTP is postponed for acute illnesses and flare-ups of chronic ones; severe reactions to previous doses and some neurological conditions are taken into account. When there are contraindications to the pertussis component, lighter versions are used. All nuances are assessed by a doctor; a deferral is a shift, not a refusal of protection forever.

DTP, Pertussis, Diphtheria and Tetanus Individually

Sometimes it helps to understand the diseases separately: more on pertussis is in whooping cough: symptoms, and on the tetanus shot specifically (including emergency use after an injury) in tetanus vaccine. Other childhood infections with a vaccine — for example measles, rubella and mumps — are covered by a different vaccine (MMR).

When to See a Doctor

See a doctor for a very high fever that will not come down, marked swelling at the injection site, unusual lethargy, seizures or signs of allergy after the shot. Routine questions (schedule, choice of vaccine, deferral) are also decided with a doctor. If you are unsure about the reaction, you can describe the situation.

This article is for informational purposes only and does not replace a doctor's consultation. The vaccination schedule, choice of vaccine and contraindications are determined by a specialist.