The correct answer is
4. 2, 3 and 4.
Core principle: safety before, during, and after vaccination
A school-based vaccination day is a mass immunization activity. The plan must be built around three non-negotiable pillars:
screening for contraindications,
preparedness for anaphylaxis, and
prevention of vasovagal syncope. Routine premedication with paracetamol is not part of that safety framework.
Why option 4 is correct: prior allergic reaction screening
Asking each learner about previous allergic reactions to vaccines is the only way to identify the
one contraindication that applies to all vaccines: a history of severe allergic reaction, such as anaphylaxis, to a prior dose or to any vaccine component. This is not a minor administrative step. A learner who reports such a history must be evaluated before receiving the vaccine, and the dose may need to be deferred or given under specialist supervision. In the school setting, this means the nurse must have a clear, simple screening question ready and know how to respond when the answer is positive.
The screening step also connects directly to the emergency plan. You cannot prepare for anaphylaxis effectively unless you first identify which learners are at higher risk. The two actions work together:
screening identifies who is at risk, and the emergency kit ensures you can respond if a reaction occurs despite screening.
Why option 2 is correct: adrenaline and emergency kit readiness
Anaphylaxis after vaccination is rare but can occur within minutes. The only definitive treatment is
adrenaline (epinephrine) given intramuscularly. Having adrenaline and a full emergency kit at the vaccination area means the nurse can act immediately without wasting time retrieving supplies from another room. This is a standard requirement for any vaccination setting, including schools.
The kit should include adrenaline in appropriate doses, an airway management set, and a clear protocol for recognizing anaphylaxis. The school nurse must also know how to activate emergency medical services.
Preparedness is not about expecting a reaction; it is about ensuring that if one occurs, the response is immediate and correct.
Why option 3 is correct: seated vaccination and 15-minute observation
Fainting, or
vasovagal syncope, is common in adolescents during vaccination. It is triggered by pain, anxiety, or the sight of the needle, and it can cause injury if the learner falls. Seating each learner for the injection prevents fall-related injuries. Observing for at least
15 minutes afterward allows the nurse to detect both early anaphylaxis and delayed fainting episodes.
The observation period is not optional. Anaphylaxis most often begins within the first 15 minutes after injection, so this window is critical for early recognition and treatment. A learner who faints should remain lying down with legs elevated until fully recovered, and the nurse should assess for any injury.
Why option 1 is incorrect: routine paracetamol before injection
Giving paracetamol to every learner before the injection is not recommended.
Paracetamol is used for discomfort after vaccination if needed, not routinely beforehand. Premedication has no proven benefit in preventing vaccine reactions and may mask early signs of a true adverse event. It also adds an unnecessary medication administration step to a busy school vaccination day. The correct approach is to assess and treat pain or fever only if they develop after the vaccine.
Putting the plan together
The school nurse’s plan should follow this sequence: screen each learner for prior severe allergic reactions, seat the learner for the injection, observe for at least 15 minutes, and keep adrenaline and an emergency kit immediately available. These actions address the three most important safety concerns in school-based vaccination: anaphylaxis prevention through screening, anaphylaxis treatment through preparedness, and injury prevention through seated vaccination and observation.
| Plan component | Rationale | Timing |
|---|
| Allergy screening | Identifies the one contraindication common to all vaccines: prior severe allergic reaction | Before injection |
| Adrenaline and emergency kit | Allows immediate treatment of anaphylaxis | Ready at all times during the session |
| Seated vaccination and 15-minute observation | Prevents fall injury from fainting and allows early detection of anaphylaxis | During and after injection |
| Routine paracetamol before injection | Not recommended; no benefit and may mask reactions | Not part of the plan |
Key point! The three correct actions form a closed safety loop: screen for risk, prepare for the worst, and observe for the most common complications. Paracetamol is a treatment for post-vaccination discomfort, not a preventive measure.
Watch out! Do not confuse observation for fainting with observation for anaphylaxis. Both require the 15-minute window, but fainting is managed by lying the learner down, while anaphylaxis requires adrenaline immediately.