Chile has become the first country in South America to receive World Health Organization validation for eliminating dog-transmitted human rabies as a public-health problem.
The achievement follows more than 50 years without a human case of rabies transmitted by a dog. WHO's recognition also reflects Chile's demonstrated capacity to prevent the disease from becoming established again.
Rabies is a viral infection that affects the central nervous system. Once clinical symptoms appear, it is almost invariably fatal, but deaths can be prevented when people receive appropriate post-exposure treatment after exposure.
Dog vaccination has been a central component of Chile's prevention strategy. Surveillance and access to post-exposure prophylaxis have also contributed to maintaining control over transmission.
The WHO validation process requires countries to demonstrate sustained interruption of dog-mediated transmission while maintaining systems capable of detecting and responding to potential reintroduction.
The achievement is particularly relevant because dogs remain responsible for the vast majority of human rabies transmissions globally. WHO estimates that dog bites and scratches account for up to 99% of human rabies cases.
Elimination does not mean that rabies has disappeared from every animal population or that individual exposures no longer require medical attention. Continued surveillance and rapid access to preventive treatment remain essential.
Chile's experience demonstrates the importance of maintaining vaccination programmes and veterinary and public-health surveillance even after transmission has been interrupted. Sustaining these measures is necessary to prevent the disease from returning.