Rabid seals in South Africa have been attacking surfers and beachgoers in Cape Town, marking the first major outbreak of the disease among marine mammals. The outbreak has led to eleven seals testing positive for rabies in the city. While seals are typically playful towards humans, the recent aggression displayed by these animals has caused concern among experts and residents.
Rabies is a deadly viral disease that affects the central nervous system and is primarily transmitted through saliva. Symptoms of rabies include fever, pain, and tingling sensations at the wound site. Without immediate medical attention, the virus can lead to fatal inflammation of the brain and spinal cord. The incubation period for rabies can vary from a week to two years, with symptoms usually appearing within one to three months after exposure.
The last recorded case of a seal contracting rabies was in 1980 in Norway, making the current outbreak in South Africa the first significant occurrence of rabies in marine mammals. The cause of this outbreak and how the disease entered the seal population remains unclear.
Gregg Oelofse, the coastal manager for the City of Cape Town, noted that South African fur seals began displaying strange behavior a few years ago, with a spike in reported seal attacks in late 2021. Testing on some of the animals in 2022 did not initially reveal the presence of rabies, leaving experts puzzled. However, a series of seal attacks on surfers earlier this year led to the discovery that at least three seals were infected with rabies.
Surfers and beachgoers are advised to exercise caution and seek medical attention if bitten by a seal. While interactions with seals were once enjoyed by surfers, the recent aggressive behavior has caused fear and concern among residents. Scientists are currently sequencing the rabies virus to track its spread within the seal population and prevent it from affecting other mammals in the area.
In light of the recent attacks, authorities have euthanized several seals and are monitoring the situation closely to prevent further spread of the disease. Despite the close contact between seals and humans, no cases of rabies in humans have been reported yet. However, residents are urged to remain vigilant and avoid seals displaying signs of aggression.
As the investigation continues, scientists are working to understand the origins of the rabies outbreak and its potential impact on other marine mammals in the region. The dense colonies of South African fur seals could pose a risk of the disease becoming endemic and spreading to other species, such as African clawless otters.
Stay updated on the latest developments in this story as scientists work to contain the outbreak and protect both humans and marine wildlife.
