Rabies and Anti-Rabies Vaccinations: A Historical and Contemporary Perspective with Focus on the Philippines

By Mariana Burgos

First of two parts

Rabies, a fatal viral disease affecting the central nervous system, has haunted humanity and animals for centuries. Its history is as old as recorded medicine, but the journey toward effective treatment and prevention is a remarkable story of scientific innovation and public health progress. 

The History of Rabies and the Birth of Vaccination

Rabies has been known since antiquity, described in ancient texts as a terrifying illness transmitted through animal bites, primarily from dogs. The disease causes severe neurological symptoms and is almost invariably fatal once clinical signs appear.

The turning point in rabies treatment came in 1885, when Louis Pasteur, the renowned French chemist and microbiologist, developed the first rabies vaccine. According to the article “The history of the first rabies vaccination in 1885” by Institut Pasteur, Pasteur’s breakthrough involved using dried spinal cords from infected rabbits to create a weakened form of the virus. This vaccine was first administered to a young boy named Joseph Meister, who had been bitten multiple times by a rabid dog. The successful treatment of Meister marked the dawn of modern immunization against rabies.

Further elaborating on this, the article “How the Modern Rabies Vaccine Came to Be” from History Of Vaccines.org highlights that Pasteur’s method laid the foundation for subsequent vaccine development. Early vaccines were nerve tissue-based, derived from infected animal tissues, but these had limitations in safety and efficacy.

Development of Rabies Vaccines for Humans and Animals

Over time, rabies vaccines evolved significantly. The World Health Organization (WHO) now recommends cell culture vaccines, which are safer and more effective than the older nerve tissue vaccines. These vaccines are produced using purified virus grown in cell cultures, reducing adverse reactions and improving immune response.

The article “Rabies vaccines – Control of Neglected Tropical Diseases” by WHO explains that two main types of vaccines protect humans: nerve tissue vaccines (largely phased out) and cell culture vaccines.

Vaccination protocols include pre-exposure prophylaxis for high-risk individuals and post-exposure prophylaxis (PEP) for those bitten or exposed to potentially rabid animals.

For animals, particularly dogs which are the primary source of human rabies infections, vaccination campaigns have been critical. Mass dog vaccination reduces the reservoir of the virus, thereby protecting human populations indirectly.

Latest Developments in Rabies Vaccination

Recent scientific advances are reshaping rabies vaccination strategies. According to the article “Developments in rabies vaccines” published on PMC by NIH, researchers are exploring novel vaccine formulations including recombinant vaccines, adjuvanted vaccines, and modified live vaccines that enhance immune response and durability.

A notable innovation described in the article “New single-dose, temperature-stable rabies vaccines could expand global access” by CU Boulder engineers involves a single-dose vaccine with timed-release technology. This could revolutionize rabies prevention by simplifying vaccination schedules and improving vaccine stability in resource-limited settings.

Additionally, the Cleveland Clinic’s article “Rabies Vaccine: Benefits & Side Effects” underscores that while current vaccines are highly effective, breakthrough infections can occur, emphasizing the need for continued vigilance and vaccine improvements.

Rabies in the Philippines: Current Situation and Challenges

The Philippines remains one of the countries most affected by rabies in Asia. According to the Philippine News Agency’s report “PH records 400 annual rabies deaths, 4M animal bite cases,” the country experiences approximately 300 to 400 human rabies deaths yearly, with millions of animal bite incidents recorded. Children and impoverished communities are disproportionately affected.

The Lancet Regional Health article “Rabies in the Philippines: a call to action” highlights a worrying increase in rabies cases in recent years despite ongoing control efforts. This resurgence is attributed to gaps in vaccination coverage, stray dog populations, and public awareness.