Do you often get colds and sore throats? Let's learn about Upper Respiratory Infection (URI)!

One of the most common conditions we hear about in our daily lives is an upper respiratory tract infection, or what we call an ``URI'' for short. Simply put, it is a viral or bacterial infection that occurs in the upper part of our respiratory system, which means the nose, sinuses, and throat. Sometimes these conditions can also be caused by fungi, but that is a little less common. Let's talk about this in more detail, because this is something that affects almost all of us.

So, what are the symptoms of these upper respiratory infections?

The symptoms you experience when you have an upper respiratory infection can vary. It depends on what caused the infection and what part of your body is affected. For example, an infection can cause swelling in parts of your respiratory system. This can lead to conditions such as ``Pharyngitis``, an infection of the throat, ``Laryngitis``, or ``Epiglottitis``. Each of these symptoms is slightly different. But in general, upper respiratory infections can include:

• Fever: The main symptom is a fever.
• Sore throat : A sore throat , difficulty swallowing.
• Cough: It can be a dry cough or a cough with mucus.
• Runny nose or stuffy nose : A runny nose or a stuffy nose that makes it difficult to breathe.
• Sneezing : Frequent sneezing is also common.
• Hoarseness or loss of voice: The voice becomes hoarse, and sometimes the voice may be lost to the point of being unable to speak.
• Fatigue : Feeling so tired and exhausted that you can't do anything.
• Facial pain : Pain in the face and forehead can occur, especially during sinus infections.
• Wheezing : A whistling sound coming from the chest when breathing.
• Swollen lymph nodes: Swollen lymph nodes, which we call "swollen" lymph nodes, occur in places like the neck.

If you have one or more of these symptoms, it could be an upper respiratory infection.

Why do we get these upper respiratory infections? What are the causes?

Most upper respiratory infections are caused by viruses . But as I mentioned before, bacteria and fungi can also cause them.However, there are a number of reasons why this may occur. The main ones are:

• Viruses that cause the common cold: These are the most common.
• Influenza A and B virus (the flu): This is what we also call the "flu".
• SARS-CoV-2 virus (COVID-19): COVID-19 is also an infection that affects the upper respiratory system.
• Respiratory Syncytial Virus (RSV): This can be a bit more severe in young children.
• Varicella-zoster virus: The virus that causes chickenpox.
• Herpes simplex virus: The virus that causes a condition called herpes.
• Streptococcus bacteria: Group A streptococcus bacteria in particular cause strep throat. Streptococcus pneumoniae is also a cause of respiratory infections.
• Haemophilus influenzae bacteria.
• Moraxella catarrhalis bacteria.
• Fungi such as Aspergillus and Mucormycetes: These generally affect people with weakened immune systems.

Just think, we can get these infections for so many different reasons.

Is this disease contagious? How is it transmitted?

Yes, most upper respiratory infections are contagious. Especially infections caused by viruses and bacteria can be easily spread from one person to another. The main ways they are spread are:

• Respiratory droplets: Through small droplets of saliva released when an infected person coughs, sneezes, or talks.
• By sharing food and drinks: When eating and drinking from the same plate, spoon, cup, or water bottle.
• By touching surfaces that are contaminated with germs: touching surfaces that are contaminated with germs, such as doorknobs, light switches, telephones, and toys, and then touching your nose, mouth, and eyes with the same hand.

Important: Upper respiratory infections caused by fungi are not usually spread from person to person.

That's why we need to be careful about washing our hands regularly and keeping our environment clean.

Can this cause dangerous complications?

Most of the time, an upper respiratory infection like a common cold doesn't cause any major complications. But sometimes, especially if left untreated, these infections can affect the lungs, causing conditions like pneumonia . In addition, if bacterial or fungal infections aren't treated properly, the germs can spread to other parts of the body and cause dangerous conditions like:

• Meningitis: Inflammation of the membranes covering the brain.
• Rheumatic fever:It affects areas like the heart, joints, and brain.
• Scarlet fever: A fever accompanied by a red rash on the skin.
• Sepsis: A severe infection that spreads throughout the body.
• Organ damage: Important organs such as the kidneys and heart can be damaged.

These people need to be a little more careful: If you have a chronic medical condition, a compromised immune system, or are over 65 years old, you are at higher risk of developing complications from this type of upper respiratory infection. Newborns also need to be extra careful, as these infections can be very serious.

How does a doctor diagnose this?

A doctor will usually diagnose an upper respiratory infection by listening to your symptoms and, if necessary, performing a physical exam. Sometimes, a nasal swab or throat culture may be done to determine if the flu is the cause of your illness. If your symptoms are not severe and the tests above confirm that it is not the flu or strep throat, it is likely that it is one of the hundreds of viruses that cause the common cold. In such cases, specific tests are not done to identify each virus.

What is the treatment for this?

Treatment for upper respiratory infections depends on the cause of the infection. Most upper respiratory infections caused by viruses, such as the common cold, do not have specific treatments. They are limited to managing symptoms. However, if it is a bacterial infection, such as strep throat, doctors will prescribe antibiotics .

Is it not possible to prevent these diseases?

There are some things we can do to reduce the risk of getting upper respiratory infections and spreading them to others. These include:

• Getting all recommended vaccinations: especially those like the flu vaccine and the Covid vaccine.
• Wash your hands thoroughly and often: Wash your hands with soap and water for at least 20 seconds. Be sure to wash your hands after going outside, before eating, and after using the bathroom.
• Disinfecting frequently touched surfaces: doorknobs, tables, telephones, etc.
• Not sharing food, drinks, or dishes with others.
• Wear a mask if you are around other people when you are sick.

Practicing these simple things can make a big difference.

Is there no way to heal quickly?

Most upper respiratory infections caused by viruses take time to resolve on their own. They usually resolve within a week or two. You can do these things to help reduce your symptoms:

• Drink plenty of water.
• Relax.
• Take over-the-counter painkillers and fever reducers that you can buy from the pharmacy without a prescription, such as paracetamol, as directed by your doctor.
• Use warm liquids (salt water gargles, ginger-cilantro gargles, etc.).
• Using a humidifier that adds moisture to the air is also good for nasal congestion.

If you have a bacterial infection, your symptoms will start to improve within a day or two of starting antibiotics . But remember, even if you feel better, you need to take the medication for the full duration prescribed by your doctor. Otherwise, the infection may come back.

How long can this disease be contagious to others?

Viral upper respiratory infections are usually most contagious in the first few days after symptoms start. Sometimes, you can be contagious as early as a day or two after symptoms start. But you can still be contagious even after you feel better, especially if you still have symptoms (like coughing and sneezing). A bacterial infection like strep throat can be contagious for weeks if left untreated.

What time should I see a doctor?

In such a case, you should definitely see a doctor:

• If your symptoms are very severe.
• If symptoms last more than two weeks .
• If symptoms recur frequently.

Long-lasting symptoms, or frequent infections, may be a sign of a bacterial infection, a fungal infection, or another medical condition. If you have a medical condition that weakens your immune system, or if you have another condition that makes you more likely to get a serious upper respiratory infection, it's best to talk to a doctor if you develop a URI.

When should you go to an Emergency Treatment Unit (ETU) ?

If you have these severe symptoms, go to an emergency room immediately:

• High fever (over 103 Fahrenheit/40 Celsius).
• Difficulty breathing.
• Chest pain.
• An abnormal sound when breathing, for example, wheezing or a harsh sound coming from the throat (stridor).
• Dizziness.
• Retractions are the pulling in of the skin between the chest bones while breathing.
• Confusion or other mental changes.

Don't ignore these.

Do all upper respiratory infections require antibiotics?

Most of the time, no. Remember, antibiotics only work against bacteria.Most upper respiratory infections are caused by viruses, so antibiotics don't work. You only need antibiotics if a doctor has examined you and confirmed that you have a bacterial infection, such as strep throat. Using antibiotics unnecessarily can make them ineffective when they're really needed.

So, what are the most important things to remember?

A sore throat, a stuffy nose, a runny nose... these are all familiar symptoms of an upper respiratory infection (URI). Fortunately, most upper respiratory infections aren't that serious. But keeping a box of tissues, a humidifier, and getting plenty of rest is a good idea during times like these.

Remember, if you have any doubts about your symptoms, or if you think you may have a bacterial infection, it is wise to see a doctor for advice. Stay healthy!

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