# Situation: A public health nurse at a Rural Health Unit (RHU) in an agricultural municipality sees clients referred by the barangay health workers (BHWs). An 8-year-old boy was scratched on the cheek by a stray dog this morning. The scratch broke the skin superficially but did not bleed. He has never received rabies vaccine. After thorough wound washing, what should the boy receive according to DOH guidelines?

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> subject: Nursing Practice I — Community Health Nursing

## 문제

Situation: A public health nurse at a Rural Health Unit (RHU) in an agricultural municipality sees clients referred by the barangay health workers (BHWs).

An 8-year-old boy was scratched on the cheek by a stray dog this morning. The scratch broke the skin superficially but did not bleed. He has never received rabies vaccine. After thorough wound washing, what should the boy receive according to DOH guidelines?

## 보기

1. Anti-rabies vaccine plus rabies immune globulin **✔ 정답**
2. No vaccine; wound washing is enough
3. Anti-rabies vaccine only, without immune globulin
4. No vaccine yet while the dog is observed for 14 days

**정답: 1**

## 해설

A minor scratch without bleeding is ordinarily a category II exposure. Under the DOH rabies guidelines, however, category II exposures on the head and neck are managed as category III because the short nerve path to the brain shortens the incubation period. The child therefore needs vaccine plus rabies immune globulin (RIG).

## 심화 해설

A minor scratch on the cheek that breaks the skin superficially without bleeding is classified as a category II exposure. However, the location of the wound changes the management. Under the DOH rabies guidelines, category II exposures on the head and neck are managed as category III because the short nerve path to the brain shortens the incubation period. This means the child requires both anti-rabies vaccine and rabies immune globulin (RIG).

The rationale for this escalation is rooted in rabies pathophysiology. Rabies virus travels centripetally along peripheral nerves to the central nervous system. When the inoculation site is on the face or neck, the distance to the brain is markedly reduced compared with a distal extremity wound. Consequently, the time available for active immunization to generate neutralizing antibodies is compressed. Key point! Active immunization alone may not produce protective antibody titers before the virus reaches neural tissue in high-risk anatomical locations.

Rabies immune globulin provides immediate passive immunity by supplying preformed neutralizing antibodies at the wound site. This bridges the gap until the vaccine series stimulates the patient's own immune response. The Philippine study by Quiambao et al. documented that 7,660 patients received purified equine RIG following category II or III exposures, confirming that RIG administration is standard practice for severe exposures in the Philippine setting [2]. The study also noted that RIG was administered to patients with category II exposures, consistent with the principle that certain category II wounds warrant immunoglobulin.

The distinction between vaccine alone and vaccine plus RIG is critical for examination purposes. Watch out! A common error is to assume that all category II exposures require only vaccine. The head and neck exception is a high-yield point for licensure examinations because it tests understanding of both exposure categorization and neuroanatomical risk.

| Exposure category | Wound characteristics | Head/neck management | Other body sites |
| --- | --- | --- | --- |
| Category II | Minor scratch or abrasion without bleeding | Vaccine plus RIG (managed as category III) | Vaccine only |
| Category III | Bites or scratches with bleeding, mucous membrane contamination | Vaccine plus RIG | Vaccine plus RIG |

The table above summarizes the DOH approach. For this 8-year-old boy, the superficial cheek scratch places him in the head and neck category II group, which is treated identically to category III. Therefore, thorough wound washing is essential but insufficient alone; post-exposure prophylaxis must include both active and passive immunization.

Recent evidence also supports the use of anti-rabies monoclonal antibodies as alternatives to traditional RIG. A randomized phase III trial in China demonstrated that monoclonal antibodies combined with rabies vaccines showed immunogenicity and safety in individuals under 18 years with category III exposure . Similarly, a prospective study in Bangalore found that rabies monoclonal antibodies provided safe and clinically effective passive protection in suspected rabies exposures . These findings reinforce the principle that passive immunization is a non-negotiable component of PEP for high-risk exposures, whether delivered as polyclonal RIG or monoclonal antibody products.

The emergency department guideline adherence study by Karabulut and Karabulut highlights that national guidelines govern PEP decisions and that adherence to the full vaccine series is a recognized challenge . For the nurse at the RHU, the immediate priority is initiating PEP correctly on the day of exposure. Delaying RIG while observing the dog for 14 days is not appropriate when the wound is on the head or neck, because rabies is almost universally fatal once clinical signs appear. The window for effective intervention is narrow, and the anatomical location of this child's wound demands the most aggressive prophylaxis available.References (research sources)

- [2]Rabies Post-Exposure Prophylaxis in the Philippines: Health Status of Patients Having Received Purified Equine F(ab')2 Fragment Rabies Immunoglobulin (Favirab)Research articleBeatriz P. Quiambao, Hazel Z. Dy-Tioco, Ruby M. Dizon, Marilyn E. Crisostomo, Thelma M. Laot, Dirk E. Teuwen (2008) · DOI: 10.1371/journal.pntd.0000243

## 임상 시나리오

Rabies PEP for Head/Neck ExposuresDOH escalation of category II to category III
A superficial scratch without bleeding is normally category II, but any category II exposure on the head or neck is managed as category III under DOH guidelines.

The child requires anti-rabies vaccine plus rabies immune globulin (RIG). RIG provides immediate passive immunity while the vaccine series generates active immunity.

CautionDo not delay PEP to observe the dog. The short nerve path from the face to the brain shortens the incubation period, so immediate prophylaxis is essential.

## 핵심 개념

- **Rabies immune globulin (RIG)** — Provides immediate passive immunity with preformed antibodies, bridging the gap until active immunization takes effect.
- **Category II exposure** — Minor scratches or abrasions without bleeding; on the head/neck, managed as category III under DOH guidelines.
- **Category III exposure** — Transdermal bites or scratches with bleeding, mucous membrane contamination; requires vaccine plus RIG.
- **Post-exposure prophylaxis (PEP)** — Wound washing plus rabies vaccine and/or RIG given after a potential rabies exposure.
- **Incubation period** — Time from virus entry to symptom onset; shorter when the inoculation site is closer to the brain.

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