Is rabies contagious?

Written by Xiong Hong Hai

Infectious Disease

Updated on September 23, 2024

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Rabies is a contagious disease, and currently, rabies is primarily transmitted by bites or scratches from rabid dogs. Additionally, there are risks of infection from bites by cats during their symptomatic phase, as well as from bats. Transmission from human to human is extremely rare. The rabies virus mainly resides in the saliva of dogs or cats during their symptomatic phase. Therefore, the risk is significant if bitten by a rabid dog. Rabies is a fatal disease, with an infection leading to 100% mortality, which makes prevention crucial.

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Written by Xiong Hong Hai

Infectious Disease

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Can rabies be transmitted indirectly?

Actually, the vast majority of rabies cases are caused by being bitten by rabid dogs and not getting vaccinated against rabies. The remaining few cases may be due to bites or scratches from cats or bats, and there are basically no instances of indirect transmission leading to infection. Rabies is a fatal disease, with a 100% fatality rate once infected. Therefore, it is crucial to enhance prevention as there are no treatment options available. Once rabies is definitively diagnosed, isolation must be enforced. If bitten by a rabid dog, it is important to handle the situation promptly by administering rabies vaccine and rabies immunoglobulin.

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Written by Xiong Hong Hai

Infectious Disease

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Rabies fear of water refers to hydrophobia, a symptom of rabies characterized by a fear or panic attack when attempting to drink water or when presented with liquids.

Patients with rabies are indeed very afraid of water. When trying to drink water, or even when seeing water or hearing the word "water," they experience uncontrollable spasms in the throat muscles and difficulty swallowing. Although they are very thirsty, they dare not drink water. In addition to being afraid of water, they are also afraid of bright lights, noise, and wind. These stimuli can cause whole-body spasms and pain, lead to opisthotonos, excessive nervous excitement, and eventually result in death due to coma.

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Written by Xiong Hong Hai

Infectious Disease

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Can rabies be cured?

Rabies cannot be cured, and once infected and symptomatic, it is 100% fatal with no existing therapeutic strategies. Treatment only involves symptomatic care to alleviate some symptoms of patients but does not improve prognosis; generally, death occurs. Therefore, prevention of rabies is crucial. If exposed to potentially rabid dog or cat bites, it is essential to promptly administer rabies vaccine, and sometimes, it is necessary to concurrently inject rabies immunoglobulin.

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Written by Xiong Hong Hai

Infectious Disease

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rabies incubation period

The incubation period for rabies is one to three months, and it is rare for it to exceed one year. The length of the incubation period for rabies varies, the shortest being about five days and the longest can reach up to eight years, with an average incubation period of one to three months. Cases exceeding one year account for about 2%-3%. The length of the incubation period for rabies is closely related to several factors including the virulence of the virus, and the nerve distribution at the site of entry. The more viruses there are, the stronger their virulence, and the richer the nerve supply at the entry site, especially closer to the central nervous system, the shorter the incubation period.

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Written by Xiong Hong Hai

Infectious Disease

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Symptoms of rabies

After the onset of rabies, obvious clinical symptoms appear, including panic, irritability, and a range of neurological symptoms such as fear of wind, water, bright lights, and noise sensitivity. There can also be hyperextension, restlessness, hallucinations, and ultimately death due to coma. Once rabies begins to manifest, most patients die within 3-5 days, with very few surviving beyond a week. Rabies is a fatal disease, with a 100% mortality rate once infected, and there are no effective treatments available.