Does rabies transmit through saliva?

Written by Xiong Hong Hai
Infectious Disease
Updated on September 12, 2024
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Rabies virus is primarily found in the saliva of dogs during the symptomatic phase, the saliva of cats during the symptomatic phase, and in the bodies of bats. There is a high concentration of rabies virus in the saliva of dogs during the symptomatic phase. Therefore, if one is bitten by a rabid dog, there is a significant risk of infection. It is necessary to promptly block and clean the wound, vaccinate against rabies, and administer rabies immunoglobulin injections locally at the wound site.

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Written by Xiong Hong Hai
Infectious Disease
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How long does rabies usually take to manifest?

Rabies generally has a variable incubation period. The question actually refers to the incubation period of rabies. The duration of this period can vary widely; the shortest is about five days before onset of the disease, while the longest can reach up to eight years. The average incubation period is two to three months, with cases exceeding one year accounting for 2%-3% of instances. The length of the incubation period is related to factors such as the virulence of the virus, and the nerve distribution at the site of entry. The greater the amount of the virus, the stronger its virulence, and the richer the nerve supply at the site of entry, especially if it is closer to the central nervous system, the shorter the incubation period will be.

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Written by Han Jian Hua
Infectious Disease
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Rabies symptoms

Rabies is mainly characterized by hydrophobia, fear of wind, pharyngeal muscle spasms, progressive paralysis, etc. It is divided into: the prodromal phase, the excitative phase, and the paralytic phase, with varying symptoms in each phase.

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Written by Xiong Hong Hai
Infectious Disease
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How long does rabies take to develop?

The incubation period for rabies generally ranges from one to three months, rarely exceeding one year, with the shortest onset at five days and the longest around six years. Actually, the duration of the incubation period is related to the location of the bite; the further from the head, the longer the incubation period. If the wound from the bite is superficial and contains fewer rabies viruses, then the incubation period will also be longer. Conversely, if there is a larger amount of rabies virus and the wound is deeper, the incubation period will be shorter. Rabies is a fatal disease, with a 100% mortality rate once infected.

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Written by Xiong Hong Hai
Infectious Disease
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How is rabies transmitted?

Rabies is primarily contracted through bites from rabid dogs who have not been vaccinated against the disease. The rabies virus is present in the saliva of rabid dogs, cats, and there is also a risk of infection from bats if they carry the rabies virus and one is bitten by such a bat. Generally, rabies infection occurs through bites or scratches from animals carrying the rabies virus; there have been no cases of transmission from human to human. Rabies is a fatal disease, so if there is exposure, it is essential to take preventive measures, as there is no cure.

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Written by Xiong Hong Hai
Infectious Disease
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Can rabies be cured?

Rabies is an incurable disease, and once symptoms develop, it is almost always 100% fatal. However, it is meaningful to use certain medications to control the patient's agitation and relieve their suffering. For example, sedatives such as Valium and phenobarbital can be used. After the onset of rabies, it is essential to isolate the patient and manage the symptoms according to the specific situation. Since rabies is incurable, prevention is critical. If bitten by animals such as dogs or cats, it is necessary to clean and disinfect the wound immediately and then promptly administer rabies vaccine and rabies immunoglobulin.