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Things you need to know about Rat-Bite Fever!

Things you need to know about Rat-Bite Fever!
Do you have rats in your house? Sometimes we don't pay much attention to a rat, right? But did you know that a rat bite, scratch, or contact with their saliva, urine, or feces can cause a dangerous disease? One such disease that we are going to talk about today is rat-bite fever, or `(Rat-Bite Fever)`. This is a bit rare, but if not treated properly, it can be life-threatening. So, let's find out more about this, shall we?

What is Rat-Bite Fever?

Simply put, rat fever is an infection caused by two types of bacteria . It is most commonly spread by the bite of an infected rat. However, if we are bitten by a rat, or if we come into contact with things like rat saliva, feces (that is, urine ), or urine (pee), we can get this disease.
This is a serious, sometimes fatal infection. So if you have symptoms of this disease after a rat bite, you should see a doctor immediately .

Are there types of rat fever?

Yes, there are two types of bacteria that cause rat-bite fever. Accordingly, rat-bite fever can be divided into two types: 1. Streptobacillary Rat-Bite Fever:
  • The cause of this is the bacterium `Streptobacillus moniliformis (S. moniliformis)`.
  • This type is most commonly seen in countries like the United States.
  • Sometimes, if this disease is caused by drinking unpasteurized milk containing this bacteria, it is also called `(Haverhill fever)`.
2. Spirillary Rat-Bite Fever:
  • The cause of this is the bacterium `Spirillum minus (S. minus)`.
  • This type is most commonly seen in Asian countries.
  • But this `(S. minus)` bacteria is not transmitted through food or drink .
  • This type is also called `(Sodoku)`.
Both types of bacteria live in the mouths and upper respiratory tracts of animals like mice.

Can this disease be transmitted from other animals?

Yes, in addition to rats, other animals can carry the bacteria that cause rat fever. Among them:
  • Mice
  • Squirrels
  • Gerbils - These are also kept as pets.
  • Guinea pigs - These are also pets.
In addition to these animals, it is said that rat fever may be associated with the following animals, very rarely, but there has not been much research on this:
  • Dogs
  • Cats
  • Cattle (like cows, bulls)
  • Pigs
  • Ferrets
  • Turkeys
  • Weasels
  • Nonhuman primates (like gorillas, apes)

How common is rat fever?

What is the real rat flu?It is a very rare disease . For example, in the United States, there are between 20,000 and 40,000 reported cases of rat bites per year. However, the chance of a person bitten by a rat is only 10%. That means that there are between 2,000 and 4,000 reported cases of rat bites per year. But here's something else. In some countries, rat bites are not a reportable condition. That means that doctors don't consider it a major threat to public health, so not all cases are reported. So, the actual number of cases of rat bites may be higher than these estimates.

What are the first symptoms of bee fever?

Although both types of rat fever we talked about earlier have common symptoms, there are some differences.

Symptoms of Streptobacillary Rat-Bite Fever:

Symptoms usually appear between 3 and 10 days after infection with this bacterium (`S. moniliformis`).

Symptoms of Spirillary Rat-Bite Fever:

Symptoms begin between 7 and 21 days after infection with this bacterium (`S. minus`).
  • Recurrent fever - This means that the fever comes, subsides after a few days, and then comes back.
  • Skin lesions and/or swelling around the bite
  • Swollen lymph nodes
  • Skin rash

What causes hay fever?

The main cause of rat fever is the two types of bacteria that we mentioned earlier, `S. moniliformis` and `S. minus`. These bacteria live in the bodies of animals like rats. Those animals are only the hosts of these bacteria. Most of the time, even if those animals have these bacteria, they do not show symptoms of the disease .

How do people get this disease?

Rat fever is most often spread through a bite or scratch from an infected rat or other animal. However, the bacteria `S. moniliformis` and `S. minus` can also be spread in these ways:
  • By touching a surface that has been contaminated with the secretions (saliva, urine, feces) of an infected rat or other animal, and then touching a wound on the body with the same hand, or by touching your mouth, nose, or eyes . Imagine, there was a rat in a corner of your house, and there was a little bit of its droppings somewhere, and you touched it and put your hand in your mouth... that's what could happen.
  • By consuming food or drinks that contain this bacteria. This happens when secretions from an infected animal get into the food or drink.
The most important thing is that rat fever is not transmitted from person to person .

Who is most likely to get this rat flu?

In fact, anyone who comes into contact with an infected rat or other animal can get rat fever. It is most common in the Americas and Asia. You may be at increased risk if you:
  • If you keep rats or other small rodents as pets (e.g. mice, guinea pigs).
  • If you raise rats to feed other animals (e.g. snakes).
  • If you spend time in areas where rats or other small animals are common .
  • If you frequently come into contact with rats, small animals, or other animals (e.g., if you work in a pet store, if you do research on animals).
  • If you have a weak immune system .

What are the possible complications of rat fever?

The bacteria `S. moniliformis` and `S. minus` can spread to other parts of your body and cause serious infections. For example:
  • Infections of the brain and spinal cord (e.g., meningitis)
  • Heart-related infections (e.g. Endocarditis, Myocarditis, Pericarditis)
  • Kidney infections (e.g. Nephritis)
  • Liver infections (e.g. Hepatitis)
  • Lung infections (e.g. pneumonia)
If not treated properly, rat fever can be fatal , especially with Streptobacillary RBF, which can kill up to 10% of people.

How to recognize rat fever?

A doctor will diagnose this. He or she will take your medical history, ask about your symptoms, and do a physical exam . If the doctor suspects that you have strep throat, he or she will take a blood test or a fluid sample from your joints and send it to a lab to check for the presence of the bacteria `S. moniliformis` or `S. minus`.

Can rat fever be cured?

Yes, definitely! Especially if the disease is diagnosed and treated early.Rat fever is completely curable. So if you have symptoms of rat fever after a rat encounter, see a doctor immediately.

How is rat fever treated?

Imagine that you have been bitten or scratched by a rat or other small animal. The first thing to do is to wash the wound thoroughly with clean water and antibacterial soap . If possible, add a little hydrogen peroxide. Then, dry the wound with a clean cloth, apply something like an antibiotic ointment , and cover it with a clean bandage. Next, see a doctor right away . He or she will likely prescribe antibiotics to control the infection. You may need to take these medications for about two weeks. These may include:
  • `Penicillin`
  • `Ceftriaxone`
  • `Ampicillin`
  • `Amoxicillin`
  • ` Doxycycline ( Doxycycline ) ` (Doxycycline)
These antibiotics can be taken as pills or given intravenously (IV). The most important thing is to take the full course of medication prescribed by your doctor, even if you feel a little better . If you don't, the flu can come back and be harder to treat.

How quickly will I recover after treatment?

Many people start feeling better within a few days of starting treatment for hay fever.

What is the future if you get rat fever?

Most people who contract the flu recover completely after treatment without any long-term effects .

What is the probability of dying from rat fever?

The risk of death from rat fever is approximately 10% . This risk can be reduced by seeking medical attention immediately after a rat bite, while alert, or when symptoms appear.

Can rat fever be prevented?

Absolutely! You can reduce your risk of developing hay fever by following these tips:
  • Stay away from rats and other small animals (rodents) . Avoid areas where they have feces.
  • If you must remove rat or small animal feces, wear rubber gloves, goggles, and a mask that covers your nose and mouth .
  • Wipe down areas where there is rat or small animal feces with a disinfectant .
  • If there are any holes in your house, seal them up . This will prevent mice and other small animals from getting inside.
  • Set up rat traps . This will help reduce the rat population in the house.
  • Don't leave food out at home.. Don't leave food out in the open, even when camping. Mice and other small animals come to places where they can easily find food. We should keep such food well covered in our homes and kitchens.

If I have rat fever, how can I take care of myself?

If you have hay fever, these things may help you:
  • Keep your wound clean . Wash it with soap and water, and cover it with a clean bandage.
  • Take antibiotics exactly as prescribed by your doctor . Set an alarm on your phone or something else to remind you to take your medication on time.
  • Stay hydrated . Drinking water helps to eliminate infections in the body.

When should I see a doctor?

Rat fever is a serious illness that can quickly become life-threatening, especially if you have a weakened immune system. If you have been bitten by a rat, small animal, or other animal and you have symptoms of rat fever, see a doctor immediately. Also, if you have rat fever and your symptoms do not improve after treatment, you should see a doctor.

What questions should you ask the doctor?

When you go to see a doctor, you can ask questions like these:
  • How did I get this rat fever?
  • If I don't have rat fever, what other condition could I have?
  • What treatments do you recommend?
  • What do I do if I miss a dose of antibiotics?
  • What symptoms should I look out for that indicate my rat fever is getting worse?

Can my pet rat get rat fever?

Yes, your pet rat can get rat fever. Rats, small animals, and other pets can carry the bacteria `S. moniliformis` and `S. minus`, but they don't show any obvious symptoms . They can contract this bacteria from direct contact with another infected rat, or from contaminated food or water. Although rare, other pets that come into contact with infected rats (e.g., dogs or cats that hunt or eat rats) can also spread this bacteria. Rats and other small animals can be very cute and cuddly. Many people keep them as pets for this very reason. However, they can also carry bacteria that can make you sick. Two such bacteria are `Streptobacillus moniliformis` and `Spirillum minus`. These are what cause rat fever. Rat fever is a rare but serious disease that occurs after close contact with an infected animal. If not treated properly, it can be fatal . So, if you develop symptoms of rat fever after being scratched, bitten, or exposed to rats by a rat or other animal, see a doctor immediately . The sooner you seek treatment, the better your chances of making a full recovery without complications.

Take-Home Message

Okay, so we've talked a lot about Rat-Bite Fever today, haven't we? Here are some of the most important things to remember:
  • Measles is not a disease to be trifled with. It is a bacterial infection that, if not treated properly, can be serious and even life-threatening.
  • If you develop symptoms of rat fever (such as fever, headache, nausea, and joint pain) after being bitten, scratched, or exposed to rat waste, see a doctor without delay. Early treatment is best.
  • Prevention is the wisest course of action. Keep your home free of rats, keep it clean, and keep food and drink covered. Simple things like these can make a big difference.
  • If you keep animals like rats as pets, be careful about cleanliness when handling them. Wear gloves when cleaning their cages.
I hope this information is useful to you. Stay healthy! Rat-Bite Fever, RBF, Bacterial Infections, Rat-Bite Fever, Animal Bites, Fever Symptoms
⚠️ Important: The medical articles and information on Nirogi Lanka are for general awareness only, and are by no means a substitute for professional medical advice, diagnosis, or treatment. For any medical problem you have, consult a qualified physician immediately.

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Things you need to know about Rat-Bite Fever!
Preventive HealthFebruary 4, 2026

Things you need to know about Rat-Bite Fever!

Do you have rats in your house? Sometimes we don't pay much attention to a rat, right? But did you know that a rat bite, scratch, or contact with their saliva, urine, or feces can cause a dangerous disease? One such disease that we are going to talk about today is rat-bite fever, or `(Rat-Bite Fever)`. This is a bit rare, but if not treated properly, it can be life-threatening. So, let's find out more about this, shall we?

What is Rat-Bite Fever?

Simply put, rat fever is an infection caused by two types of bacteria . It is most commonly spread by the bite of an infected rat. However, if we are bitten by a rat, or if we come into contact with things like rat saliva, feces (that is, urine ), or urine (pee), we can get this disease.
This is a serious, sometimes fatal infection. So if you have symptoms of this disease after a rat bite, you should see a doctor immediately .

Are there types of rat fever?

Yes, there are two types of bacteria that cause rat-bite fever. Accordingly, rat-bite fever can be divided into two types: 1. Streptobacillary Rat-Bite Fever:
  • The cause of this is the bacterium `Streptobacillus moniliformis (S. moniliformis)`.
  • This type is most commonly seen in countries like the United States.
  • Sometimes, if this disease is caused by drinking unpasteurized milk containing this bacteria, it is also called `(Haverhill fever)`.
2. Spirillary Rat-Bite Fever:
  • The cause of this is the bacterium `Spirillum minus (S. minus)`.
  • This type is most commonly seen in Asian countries.
  • But this `(S. minus)` bacteria is not transmitted through food or drink .
  • This type is also called `(Sodoku)`.
Both types of bacteria live in the mouths and upper respiratory tracts of animals like mice.

Can this disease be transmitted from other animals?

Yes, in addition to rats, other animals can carry the bacteria that cause rat fever. Among them:
  • Mice
  • Squirrels
  • Gerbils - These are also kept as pets.
  • Guinea pigs - These are also pets.
In addition to these animals, it is said that rat fever may be associated with the following animals, very rarely, but there has not been much research on this:
  • Dogs
  • Cats
  • Cattle (like cows, bulls)
  • Pigs
  • Ferrets
  • Turkeys
  • Weasels
  • Nonhuman primates (like gorillas, apes)

How common is rat fever?

What is the real rat flu?It is a very rare disease . For example, in the United States, there are between 20,000 and 40,000 reported cases of rat bites per year. However, the chance of a person bitten by a rat is only 10%. That means that there are between 2,000 and 4,000 reported cases of rat bites per year. But here's something else. In some countries, rat bites are not a reportable condition. That means that doctors don't consider it a major threat to public health, so not all cases are reported. So, the actual number of cases of rat bites may be higher than these estimates.

What are the first symptoms of bee fever?

Although both types of rat fever we talked about earlier have common symptoms, there are some differences.

Symptoms of Streptobacillary Rat-Bite Fever:

Symptoms usually appear between 3 and 10 days after infection with this bacterium (`S. moniliformis`).

Symptoms of Spirillary Rat-Bite Fever:

Symptoms begin between 7 and 21 days after infection with this bacterium (`S. minus`).
  • Recurrent fever - This means that the fever comes, subsides after a few days, and then comes back.
  • Skin lesions and/or swelling around the bite
  • Swollen lymph nodes
  • Skin rash

What causes hay fever?

The main cause of rat fever is the two types of bacteria that we mentioned earlier, `S. moniliformis` and `S. minus`. These bacteria live in the bodies of animals like rats. Those animals are only the hosts of these bacteria. Most of the time, even if those animals have these bacteria, they do not show symptoms of the disease .

How do people get this disease?

Rat fever is most often spread through a bite or scratch from an infected rat or other animal. However, the bacteria `S. moniliformis` and `S. minus` can also be spread in these ways:
  • By touching a surface that has been contaminated with the secretions (saliva, urine, feces) of an infected rat or other animal, and then touching a wound on the body with the same hand, or by touching your mouth, nose, or eyes . Imagine, there was a rat in a corner of your house, and there was a little bit of its droppings somewhere, and you touched it and put your hand in your mouth... that's what could happen.
  • By consuming food or drinks that contain this bacteria. This happens when secretions from an infected animal get into the food or drink.
The most important thing is that rat fever is not transmitted from person to person .

Who is most likely to get this rat flu?

In fact, anyone who comes into contact with an infected rat or other animal can get rat fever. It is most common in the Americas and Asia. You may be at increased risk if you:
  • If you keep rats or other small rodents as pets (e.g. mice, guinea pigs).
  • If you raise rats to feed other animals (e.g. snakes).
  • If you spend time in areas where rats or other small animals are common .
  • If you frequently come into contact with rats, small animals, or other animals (e.g., if you work in a pet store, if you do research on animals).
  • If you have a weak immune system .

What are the possible complications of rat fever?

The bacteria `S. moniliformis` and `S. minus` can spread to other parts of your body and cause serious infections. For example:
  • Infections of the brain and spinal cord (e.g., meningitis)
  • Heart-related infections (e.g. Endocarditis, Myocarditis, Pericarditis)
  • Kidney infections (e.g. Nephritis)
  • Liver infections (e.g. Hepatitis)
  • Lung infections (e.g. pneumonia)
If not treated properly, rat fever can be fatal , especially with Streptobacillary RBF, which can kill up to 10% of people.

How to recognize rat fever?

A doctor will diagnose this. He or she will take your medical history, ask about your symptoms, and do a physical exam . If the doctor suspects that you have strep throat, he or she will take a blood test or a fluid sample from your joints and send it to a lab to check for the presence of the bacteria `S. moniliformis` or `S. minus`.

Can rat fever be cured?

Yes, definitely! Especially if the disease is diagnosed and treated early.Rat fever is completely curable. So if you have symptoms of rat fever after a rat encounter, see a doctor immediately.

How is rat fever treated?

Imagine that you have been bitten or scratched by a rat or other small animal. The first thing to do is to wash the wound thoroughly with clean water and antibacterial soap . If possible, add a little hydrogen peroxide. Then, dry the wound with a clean cloth, apply something like an antibiotic ointment , and cover it with a clean bandage. Next, see a doctor right away . He or she will likely prescribe antibiotics to control the infection. You may need to take these medications for about two weeks. These may include:
  • `Penicillin`
  • `Ceftriaxone`
  • `Ampicillin`
  • `Amoxicillin`
  • ` Doxycycline ( Doxycycline ) ` (Doxycycline)
These antibiotics can be taken as pills or given intravenously (IV). The most important thing is to take the full course of medication prescribed by your doctor, even if you feel a little better . If you don't, the flu can come back and be harder to treat.

How quickly will I recover after treatment?

Many people start feeling better within a few days of starting treatment for hay fever.

What is the future if you get rat fever?

Most people who contract the flu recover completely after treatment without any long-term effects .

What is the probability of dying from rat fever?

The risk of death from rat fever is approximately 10% . This risk can be reduced by seeking medical attention immediately after a rat bite, while alert, or when symptoms appear.

Can rat fever be prevented?

Absolutely! You can reduce your risk of developing hay fever by following these tips:
  • Stay away from rats and other small animals (rodents) . Avoid areas where they have feces.
  • If you must remove rat or small animal feces, wear rubber gloves, goggles, and a mask that covers your nose and mouth .
  • Wipe down areas where there is rat or small animal feces with a disinfectant .
  • If there are any holes in your house, seal them up . This will prevent mice and other small animals from getting inside.
  • Set up rat traps . This will help reduce the rat population in the house.
  • Don't leave food out at home.. Don't leave food out in the open, even when camping. Mice and other small animals come to places where they can easily find food. We should keep such food well covered in our homes and kitchens.

If I have rat fever, how can I take care of myself?

If you have hay fever, these things may help you:
  • Keep your wound clean . Wash it with soap and water, and cover it with a clean bandage.
  • Take antibiotics exactly as prescribed by your doctor . Set an alarm on your phone or something else to remind you to take your medication on time.
  • Stay hydrated . Drinking water helps to eliminate infections in the body.

When should I see a doctor?

Rat fever is a serious illness that can quickly become life-threatening, especially if you have a weakened immune system. If you have been bitten by a rat, small animal, or other animal and you have symptoms of rat fever, see a doctor immediately. Also, if you have rat fever and your symptoms do not improve after treatment, you should see a doctor.

What questions should you ask the doctor?

When you go to see a doctor, you can ask questions like these:
  • How did I get this rat fever?
  • If I don't have rat fever, what other condition could I have?
  • What treatments do you recommend?
  • What do I do if I miss a dose of antibiotics?
  • What symptoms should I look out for that indicate my rat fever is getting worse?

Can my pet rat get rat fever?

Yes, your pet rat can get rat fever. Rats, small animals, and other pets can carry the bacteria `S. moniliformis` and `S. minus`, but they don't show any obvious symptoms . They can contract this bacteria from direct contact with another infected rat, or from contaminated food or water. Although rare, other pets that come into contact with infected rats (e.g., dogs or cats that hunt or eat rats) can also spread this bacteria. Rats and other small animals can be very cute and cuddly. Many people keep them as pets for this very reason. However, they can also carry bacteria that can make you sick. Two such bacteria are `Streptobacillus moniliformis` and `Spirillum minus`. These are what cause rat fever. Rat fever is a rare but serious disease that occurs after close contact with an infected animal. If not treated properly, it can be fatal . So, if you develop symptoms of rat fever after being scratched, bitten, or exposed to rats by a rat or other animal, see a doctor immediately . The sooner you seek treatment, the better your chances of making a full recovery without complications.

Take-Home Message

Okay, so we've talked a lot about Rat-Bite Fever today, haven't we? Here are some of the most important things to remember:
  • Measles is not a disease to be trifled with. It is a bacterial infection that, if not treated properly, can be serious and even life-threatening.
  • If you develop symptoms of rat fever (such as fever, headache, nausea, and joint pain) after being bitten, scratched, or exposed to rat waste, see a doctor without delay. Early treatment is best.
  • Prevention is the wisest course of action. Keep your home free of rats, keep it clean, and keep food and drink covered. Simple things like these can make a big difference.
  • If you keep animals like rats as pets, be careful about cleanliness when handling them. Wear gloves when cleaning their cages.
I hope this information is useful to you. Stay healthy! Rat-Bite Fever, RBF, Bacterial Infections, Rat-Bite Fever, Animal Bites, Fever Symptoms
⚠️ Important: The medical articles and information on Nirogi Lanka are for general awareness only, and are by no means a substitute for professional medical advice, diagnosis, or treatment. For any medical problem you have, consult a qualified physician immediately.

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