Management of Dog Bites from Unvaccinated Dogs: Rabies Post-Exposure Prophylaxis Guidelines

Decision Algorithm for Rabies PEP After Dog Bite

A 10-day observation period of the dog is required to determine if rabies post-exposure prophylaxis (PEP) is needed, according to the Centers for Disease Control and Prevention (CDC) 1
The circumstances of the bite incident, such as an unprovoked attack, can indicate the animal is rabid, as stated by the CDC 1
The epidemiology of rabies in the geographic area, such as regional rabies prevalence, should be considered in the risk assessment, as recommended by the CDC 1
The biting animal's health status and behavior, such as signs of illness or abnormal behavior, should be evaluated, as suggested by the CDC 1
The potential for the dog to have been exposed to rabies, such as presence of unexplained wounds, should be considered, as noted by the CDC 1

Immediate and thorough washing of all bite wounds and scratches with soap and water for 15 minutes is the most effective measure for preventing rabies, as recommended by the CDC 2
Virucidal agents such as povidone-iodine solution should be used for irrigation, as suggested by the CDC 2
Tetanus prophylaxis and measures to control bacterial infection should be administered as indicated, according to the CDC 2 and the American Academy of Family Physicians 3

The current recommended regimen for rabies PEP is 1 dose of RIG and 5 doses of HDCV over a 28-day period (days 0, 3, 7, 14, and 28), as stated by the CDC 1 and 2

In the United States, rabies among dogs is reported most commonly along the US-Mexico border and sporadically in areas with enzootic wildlife rabies, as noted by the CDC 2
In most of Asia, Africa, and Latin America, dogs remain the major source of human rabies exposure and represent an increased risk, as stated by the CDC 1
Delaying wound cleansing can lead to rabies transmission, as warned by the CDC 2
Failing to observe a healthy domestic dog for 10 days before initiating unnecessary PEP can lead to unnecessary treatment, as cautioned by the CDC 1
Assuming a dog is not rabid based solely on vaccination status can be misleading, as even vaccinated animals can occasionally develop rabies, as noted by the CDC 1