Which viral disease is commonly treated after exposure with vaccination?

Rabies is a viral disease that is particularly notable for its treatment approach following exposure. After potential exposure to the rabies virus, typically through a bite from an infected animal, the post-exposure prophylaxis (PEP) protocol involves administering rabies vaccinations. This treatment is highly effective at preventing the onset of the disease if given in a timely manner after the exposure.

The rabies vaccine works by stimulating the immune system to produce antibodies against the rabies virus, thus preventing the virus from causing the disease, which is almost universally fatal once symptoms appear. This proactive measure is crucial because rabies has no effective treatment once clinical symptoms develop.

In contrast, while vaccines for diseases like polio and chickenpox are important for prevention, they are typically administered before exposure to the virus rather than after. Herpes, on the other hand, does not have a vaccine for prevention after exposure and is managed primarily through antiviral medications to reduce symptoms and outbreaks.