Not all dog bites lead to rabies transmission. According to the Centers for Disease Control and Prevention (CDC), rabies is almost always fatal if left untreated.
The virus is usually transmitted through the saliva of infected animals, typically through a bite. The rabies virus attacks the nervous system, causing inflammation of the brain and eventually death.
Dog bites are a common mode of rabies transmission, but the risk depends on various factors. The likelihood of transmission increases if the dog has not been vaccinated against rabies.
In the United States, for example, there are approximately 59,000 to 65,000 reported dog bites each year, but only a small percentage of these bites result in rabies transmission.
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What Is Rabies?
Rabies is an infectious disease that affects the central nervous system in mammals.
It's transmitted through the saliva of an infected animal, specifically a few days before death when the animal "sheds" the virus.
Rabies is not transmitted through the blood of an infected animal.
Most rabid animals behave abnormally due to the disease's effect on the nervous system.
Rabies is not spread airborne through the open environment.
Rabies in Animals
Rabies in animals can be a serious concern, and it's essential to know the signs to look out for. Wild animals with rabies may appear agitated, bite or snap at imaginary and real objects, and drool excessively. However, most signs can also be indicative of other diseases, so it's crucial to seek advice from local animal control or a wildlife agency if you notice unusual behavior in a nocturnal animal that's active during the day.
Some animals are more likely to carry rabies than others. In the USA, most cases occur among wild raccoons, skunks, foxes, and bats, with coyotes and opossums also being potential carriers. Domestic animals like dogs, cats, and cattle can get infected, but they rarely do. In San Francisco, for example, all animal rabies cases since the 1940s have occurred in bats.
If you handle a pet that's been in a fight with a potentially rabid animal, take precautions like wearing gloves to prevent exposure to fresh saliva. The rabies virus is short-lived when exposed to open air and can only survive in saliva. If you're bitten or scratched by an animal, seek medical attention immediately, as rabies can be fatal if left untreated.
Here's a list of animals that can pass rabies to people in the USA:
- Wild raccoons
- Skunks
- Foxes
- Bats
- Coyotes
- Opossums
Keep in mind that a pet dog, cat, or ferret that's current with rabies vaccines is very unlikely to have rabies. However, it's still essential to take precautions and seek medical attention if you're bitten or scratched by any animal.
Rabies Transmission
Rabies is transmitted through the saliva of an infected animal, usually via a bite.
The virus travels from the brain to the salivary glands during the final stage of the disease, which is when an animal can spread the disease.
Rabies can't go through unbroken skin, so people can't get it just by touching an infected animal. However, if you handle a pet who has been in a fight with a potentially rabid animal, take precautions such as wearing gloves to keep any still-fresh saliva from getting into an open wound.
The rabies virus is short-lived when exposed to open air and can only survive in saliva. It dies when the animal's saliva dries up.
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Here are some common ways animals can pass rabies to people:
- Wild animals like raccoons, skunks, foxes, bats, coyotes, and opossums
- Domestic animals like dogs, cats, and cattle, although this is rare in the USA
It's worth noting that small rodents like gophers, squirrels, mice, rats, gerbils, hamsters, and guinea pigs are not typically carriers of rabies in the USA.
Rabies After a Bite
Rabies travels from the brain to the salivary glands during the final stage of the disease, which is when an animal can spread the disease, most commonly through a bite.
If you're bitten by an animal that may have rabies, it's essential to take precautions to prevent the disease from taking hold. Rabies can't go through unbroken skin, so if you're wearing gloves, you're less likely to get infected.
To get the rabies virus, you need to come into contact with saliva or brain tissue from a rabid animal through a bite, scratch, abrasion, open wound, or mucous membranes.
Here are the steps to take if you're bitten by an animal that may have rabies:
- Wash the wound with soap and water immediately
- Apply antibiotic ointment to the wound
- Seek medical attention right away
The combination of wound treatment, Human Rabies Immune Globulin (HRIG), and vaccination is 100% effective in preventing human rabies if done correctly and soon enough after exposure.
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Rabies Information
Rabies is a serious concern, especially when it comes to dog bites. Most dogs in the United States are vaccinated against rabies, which reduces the risk of transmission.
However, the highest risk of contracting rabies comes from wild animals like skunks, foxes, raccoons, and bats. These animals can secrete large amounts of the virus in their saliva.
A bite from a rabid animal is the most common way dogs become infected with rabies. This is because the virus is present in the animal's saliva.
Rabies can also be transmitted if the infected animal's saliva comes into contact with an open wound, a scratch, or areas like the mouth, eyes, or nose.
Dogs and Rabies
Dogs can get rabies, but it's not as common as you might think. In fact, most dogs in the United States are vaccinated against rabies, making it unlikely for them to contract it from another dog.
The highest risk of rabies transmission to dogs comes from wild animals like skunks, foxes, raccoons, and bats. These animals secrete large amounts of the virus in their saliva, which can be spread through a bite.
If a dog does get rabies, it's usually through a bite from a rabid animal, but it can also be transmitted if the infected animal's saliva comes into contact with a scratch, an open wound, or areas like the mouth, eyes, or nose.
Here are some common animals that can pass rabies to dogs:
- Skunks
- Foxes
- Raccoons
- Bats
- Coyotes
It's worth noting that domestic animals like dogs, cats, and ferrets can get infected with rabies, but they only rarely do.
Rabies Shots Regimen
The rabies shots regimen is a crucial step in preventing the disease after exposure. It involves a combination of wound treatment, Human Rabies Immune Globulin (HRIG), and vaccination.
You should get HRIG and the first dose of vaccine from a doctor as soon as possible after exposure. This is the first step in preventing rabies.
The regimen includes 4 doses of rabies vaccine for most people, given on days 3, 7, and 14 after the first vaccine dose. If you're getting the shots, make sure to follow this schedule carefully.
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The combination of wound treatment, HRIG, and vaccination is 100% effective in preventing human rabies. This means that if you take these steps soon enough and correctly after an exposure, you won't develop rabies.
If you're immunosuppressed, you'll need a fifth dose of the vaccine on day 28 after the first vaccine dose. This is an important consideration if you have a weakened immune system.
Information for Clinicians and Veterinarians
If you're a clinician or veterinarian in San Francisco, you should call the SFDPH Communicable Disease Control Unit at (415) 554-2830 to report a potential rabies exposure or to discuss the need for post-exposure prophylaxis (PEP).
Clinicians and veterinarians should report all animal bites to Animal Care and Control (ACC), even if the risk of rabies is low, such as a bite from a domestic cat.
To report an animal bite, you can call ACC or complete an Animal Bite Report. You can find ACC's contact information by clicking here.
Any animal that bites a person and is euthanized before 10 days of monitoring can be completed must be tested for rabies, as mandated by California regulation (17 California Code of Regulations [CCR] ยง2606).
Veterinarians must report such animals to ACC at 415-554-9400 to set up testing.
Dogs - Rabies Symptoms
Rabies will affect your dog's nervous system, causing major behavioral changes. These changes can be quite drastic, making your dog become very agitated and easily stimulated.
Some dogs may exhibit fearfulness and aggression, attempting to bite or show their teeth. They may also bark and react violently in any situation.
As the disease progresses, seizures can occur, followed by paralysis. Unfortunately, rabies is almost always fatal in dogs.
Frequently Asked Questions
What happens if a dog without rabies bites you?
If a dog without rabies bites you, it's unlikely you'll need rabies shots, but it's best to consult your doctor and local public health officials for guidance.
Sources
- https://www.humanesociety.org/resources/understanding-rabies
- https://www.aphis.usda.gov/national-wildlife-programs/rabies/faq
- http://www.sf.gov/prevent-getting-rabies-after-animal-bite-scratch-or-exposure
- https://www.akc.org/expert-advice/health/rabies-dogs-symptoms-vaccine-prevention/
- https://www.healthy.arkansas.gov/programs-services/topics/rabies-animal-bites
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