Have you ever heard of this name 'Orthopoxvirus'? This may be a new word for you. But this group of viruses can cause small bumps and water-filled blisters on our skin. Sometimes these can also be transmitted to us from animals. So, let's talk about this in a little more detail today? Let's see what exactly is happening.
What exactly is Orthopoxvirus?
Simply put, Orthopoxvirus is the name given to a group of viruses. When these viruses enter the body, they mainly cause skin lesions, such as bumps or blisters. What is special is that they are also called 'zoonotic' diseases. This means that these viruses can be transmitted to animals, and from animals to humans. Mammals such as cows, cats, and small rodents can get them. Occasionally, they can also be transmitted to humans. However, only two viruses, smallpox – which has now been completely eradicated from the world – and Mpox, are currently known to be orthopoxviruses that can be transmitted from person to person.
What types of Orthopoxvirus are there?
There are several types of viruses that belong to this Orthopoxvirus family. Here are a few examples:
- Akhmeta virus
- Alaskapox virus
- Camelpox virus – that is, it comes from camels.
- Cowpox virus – This can be transmitted from cows.
- Horsepox virus – associated with horses.
- Mpox virus – You may have heard about this recently.
- Vaccinia virus – This is what is used to make the smallpox vaccine.
- Variola virus – This is the virus that causes smallpox that I mentioned earlier.
What are the symptoms of this?
If you get an Orthopoxvirus like this, the main and most easily recognizable symptom is a raised, well-defined, bumpy rash. These rashes don't come on all at once. They develop in stages. They start out flat, then they become raised (sometimes called papules), then they become fluid-filled blisters (sometimes called vesicles), and finally they crust over and heal. This entire process can take several weeks. These rashes can sometimes be painful and itchy.
Depending on the type of virus, these lesions can appear in different parts of the body. For example:
- On your hands, especially your palms.
- On the soles of the feet.
- In relation to the anus.
- In the genital areas (penis or vagina).
In addition to these symptoms, there may be several other symptoms:
- Muscle pain, like a sore throat.
- Swelling of the lymph nodes, we call them swollen glands, that's what it is.
How is Orthopoxvirus transmitted?
There are two main ways that this Orthopoxvirus can be transmitted: from animals to humans and from humans to humans.
You can get this virus from an infected animal if the animal scratches or bites you, or if your skin comes into direct contact with the animal's blood, body fluids, or skin lesions.
Also, you can get infected if you have close contact with someone who is infected with this virus. This means:
- Through contact with respiratory droplets released when coughing, sneezing, or talking.
- By coming into contact with the fluid oozing from the patient's skin wounds and blisters.
- From intimate contact, such as kissing and having sex.
Currently, the only Orthopoxvirus that can be transmitted from person to person is Mpox. (Smallpox was also transmitted from person to person, but it has been eliminated from the world since 1980.) Other Orthopoxviruses, such as Alaskapox and Camelpox, are transmitted through contact with infected animals.
What kind of animals carry these viruses?
There are several types of mammals that can carry this Orthopoxvirus. Some of them are:
- The pets in our homes, that is, people like cats and dogs.
- Red-backed voles and shrews are the carriers of the Alaskapox virus.
- Small animals like squirrels, mice, and rats can carry the Mpox virus.
Some types of Orthopoxvirus can also be transmitted to animals through insects such as ticks.
How is this disease accurately diagnosed? (Diagnosis)
A doctor may suspect that you have an orthopoxvirus based on your rash and other symptoms. To be sure, they may do several tests. For example:
- A sample of your blood will be tested.
- A sample of fluid is taken from a skin lesion and tested.
- Or you can take a small piece of skin (tissue sample) and test it.
How to treat this?
Most of the time, doctors don't treat Orthopoxvirus unless you're in serious trouble. However, sometimes, if you have a severe case of the virus, like Mpox, you may be given antiviral medications that are used to treat smallpox. Also, an antibody treatment called Vaccinia immune globulin (VIG-IV) is sometimes used.
What happens if I get a virus like this? What can I expect?
If a doctor confirms that you have orthopoxvirus, they will give you advice on how to manage your symptoms at home and what to do if your symptoms become severe . The most important thing is to stay away from other people while you have symptoms. This will help prevent you from spreading the virus to others.
Currently, Orthopoxvirus is not commonly seen in humans. Furthermore, since smallpox has been eradicated, most Orthopoxvirus infections that are now reported are not life-threatening.
When should I see a doctor?
If you think you may be at increased risk of exposure to Orthopoxvirus, talk to a doctor. He or she can explain your risk and what protective measures you can take.
In addition, see a doctor if:
- If you have a new rash or sore on your skin .
- If you feel unwell, such as fever, body aches, or swollen lymph nodes .
- If you have been in close contact with a person or animal infected with Orthopoxvirus.
When should you go to an Emergency Treatment Unit (ETU) ?
If you have serious symptoms , you should go to an emergency room (ER) immediately. This means:
- High fever (over 103 Fahrenheit/40 Celsius).
- Severe or sudden difficulty breathing.
- Chest pain.
- Severe vomiting or diarrhea.
- Confusion or other mental changes (e.g., loss of consciousness).
- Constant weakness or dizziness.
Can't we protect ourselves from this Orthopoxvirus? What can we do?
Yes, there are things we can do to protect ourselves from these viruses. If you are at high risk of exposure to one of these viruses, you can get vaccines against some orthopoxviruses. For example, there are vaccines for measles and smallpox.
In addition, you can also reduce your risk by doing these things:
- If your job or hobby requires you to interact with animals (especially those that can carry these viruses), wear protective equipment , such as gloves and masks.
- Avoid contact with infected animals or people. This includes dead animals.
- Avoid touching items such as bedding and clothing contaminated with Orthopoxvirus.
- Cook all foods containing animal meat or animal parts thoroughly.
- Always wash your hands thoroughly with soap.
- Practice safe sex . That means using things like condoms and dental dams.
- If you are caring for someone infected with Orthopoxvirus, use Personal Protective Equipment (PPE) .
Is chickenpox also a type of Orthopoxvirus?
No, chickenpox is not a disease belonging to the Orthopoxvirus group. The virus that causes chickenpox is the Varicella-zoster virus. It belongs to the Herpes virus family.
Since the eradication of smallpox, outbreaks of orthopoxviruses among humans have been rare. But if one were to occur, it would be a bit of scary news. Fortunately, there are vaccines for the only two orthopoxviruses that we know of that can be transmitted from person to person, smallpox (although not now) and mpox. Although orthopoxviruses sometimes jump from animals to people, existing antiviral medications and antibody treatments may be helpful in treating new strains of orthopoxviruses in humans.
Some of the most important things we need to remember
Okay, so, from what we've talked about with Orthopoxvirus, here are some of the main things you need to remember:
- This virus can cause rashes, such as skin bumps and blisters .
- These can be transmitted from animals to humans, and some types (currently Mpox) can also be transmitted from humans to humans .
- Following safety measures (washing hands thoroughly, staying away from infected people/animals, practicing safe sex) is very important.
- If you have suspicious symptoms (new sores, fever, body aches) , or have been in close contact with an infected person/animal , be sure to seek medical advice.
- If you have serious symptoms (high fever, difficulty breathing, chest pain, confusion) , go to an emergency room immediately.
Remember, the most important thing is to be aware of this virus. There's nothing to fear, but it's better to be careful!
Orthopoxvirus , Mpox, Smallpox, Skin lesions, Viral infections


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