Infectious Diseases

What Are Infectious Diseases? Diagnostic, Treatment, and Preventive Health Approaches

The Infectious Diseases Department is an important medical specialty that deals with the diagnosis, treatment, monitoring, and follow-up of infectious diseases caused by bacteria, viruses, fungi, and parasites.

In this department, many conditions such as febrile illnesses, upper respiratory tract infections, urinary tract infections, pneumonia, hepatitis, flu, COVID-19, intestinal infections, and skin infections are evaluated.

Infectious diseases can arise as a result of person-to-person contact, airborne transmission, consumption of contaminated water and food, or the bites of vectors such as insects and ticks. Correct identification of the microorganism causing the infection is of great importance for an effective treatment process.

The Infectious Diseases Department also plays an important role in preventive healthcare practices. Topics such as vaccination, hygiene rules, methods of protection from infectious diseases, and the control of epidemic diseases are also within the scope of this department.

Daviva Health Group Infectious Diseases Department; evaluates patients' health status and creates personalized treatment plans by using modern diagnostic methods with its experienced team of specialists and advanced technological infrastructure.

Which Diseases Does the Infectious Diseases Department Deal With?

The Infectious Diseases Department is a medical specialty focused on the diagnosis, treatment, and follow-up of infectious diseases and infections related to the immune system. In this department; the frequency of infections, routes of transmission, risk factors, symptom assessment, diagnostic methods, treatment options, and preventive healthcare practices are addressed.

The infectious diseases specialist identifies the source of the infection through blood tests, culture tests, imaging methods, and laboratory examinations. For example, pneumonia may be bacterial, viral, or, rarely, fungal in origin. Therefore, the treatment plan is shaped according to the microorganism causing the infection.

In this department, diagnosis and treatment are carried out for many health problems such as viral infections, bacterial infections, fungal infections, parasitic diseases, urinary tract infections, intestinal infections, pneumonia, flu, hepatitis, HIV, hospital-acquired infections, and infections caused by multidrug-resistant bacteria.

Infectious diseases also deal with infections that develop after organ transplantation, infections that occur in patients receiving cancer treatment, infections seen in individuals with weakened immune systems, and the control of epidemic diseases.

Vaccination programs, hygiene rules, methods of protection from infections, and practices related to hospital hygiene are also among the important areas of work in this department. Infectious diseases specialists also guide other physicians and healthcare personnel on infection control and play an active role in educational efforts aimed at preventing infectious diseases.

What Does the Infectious Diseases Department Treat?

The department creates patient-specific treatment plans, especially by collaborating with other medical specialties in the management of complex infections.

The main diseases treated in the Infectious Diseases Department are:

• HIV and AIDS
• Sexually transmitted diseases
• Chronic viral hepatitis (Hepatitis A, B, C, D, and E)
• Viral infections (Herpes viruses, COVID-19, H1N1)
• Tick-borne diseases (Lyme disease, rickettsiosis, Crimean-Congo hemorrhagic fever)
• Severe bacterial infections
• Fungal infections
• Parasitic diseases
• Febrile illnesses
• Post-travel infections
• Hospital-acquired infections (multidrug-resistant bacteria)

What Are the Symptoms of Infectious Diseases?

The symptoms of infectious diseases may vary depending on the type of microorganism causing the infection and the severity of the disease. Some patients may have mild symptoms, while in some cases serious and rapidly progressing symptoms may occur.

Common symptoms seen in infectious diseases are:

• Fever and chills
• Fatigue and body aches
• Runny nose
• Cough and shortness of breath
• Diarrhea and vomiting
• Abdominal or pelvic pain
• Skin sores, rash, or ulcers
• Redness and swelling in the eyes
• Burning sensation when urinating

After the physical examination, the infectious diseases specialist requests blood tests, culture tests, imaging methods, and laboratory examinations to determine the source of the infection, its type, and how it affects the body. In this way, an accurate diagnosis is made and an effective treatment plan is established.

What Are the Most Common Infectious Diseases?

Infectious diseases are health problems caused by microorganisms and arise with different symptoms and routes of transmission. Some infections may be mild, while others may require hospitalization and advanced treatment. Today, many infectious diseases can be prevented through early diagnosis, appropriate treatment, and vaccination.

Upper Respiratory Tract Infections

Upper respiratory tract infections are among the most common acute infectious diseases. These infections affect the nose, throat, pharynx, and sinuses and are usually caused by viruses and bacteria. The common cold, flu, pharyngitis, sinusitis, and tonsillitis are the most common upper respiratory tract infections.

Urinary Tract Infections

Urinary tract infections occur as a result of bacteria entering the urinary tract. These infections mostly affect the bladder and urethra. Urinary tract infections, which are more common in women, may present with symptoms such as burning during urination, frequent urination, foul-smelling urine, and lower abdominal pain. If left untreated, they can progress to the kidneys.

COVID-19

COVID-19 is a contagious respiratory disease caused by the SARS-CoV-2 virus. This disease, which first emerged in 2019, quickly turned into a global pandemic. COVID-19 can affect not only the lungs but also the heart, kidneys, intestines, skin, and nervous system. Fever, cough, shortness of breath, fatigue, and loss of taste and smell are among the most common symptoms.

Hepatitis

Hepatitis is inflammation of the liver tissue. Viral infections, alcohol use, medications, toxins, and immune system diseases can cause hepatitis. Hepatitis A, B, C, D, and E are among the most common types of viral hepatitis. Some types of hepatitis can be contagious and may lead to serious liver damage.

Fungal Infections

Fungal infections are usually infections caused by Candida species. These infections can be seen in the mouth, skin, nails, genital area, and other moist body areas. Fungal infections are more common in people with weakened immune systems. Itching, redness, discharge, and skin irritation are among the most common symptoms.

Sexually Transmitted Diseases

Sexually transmitted diseases are infections caused by microorganisms. Chlamydia, gonorrhea, genital herpes, HPV, and HIV are among the most common sexually transmitted diseases. Unprotected sexual intercourse, having multiple partners, and not having regular checkups increase the risk factors. Early diagnosis and appropriate treatment are important to prevent the spread of the disease.

What Are the Diagnostic Methods for Infectious Diseases?

In order to make an accurate diagnosis in the Infectious Diseases Department, the microorganisms causing the infection must be identified. The infectious diseases specialist determines the source of the infection by examining samples taken from blood, urine, saliva, sputum, or other body fluids.

Blood Tests

Blood tests are one of the most commonly used methods to determine the presence and severity of an infection. In particular, the blood culture test is used to investigate whether bacteria, fungi, or other microorganisms are present in the blood. Blood tests also help assess the effects of the infection on the immune system.

Culture Tests

Culture tests make it possible to identify microorganisms causing infection by multiplying them in a laboratory environment. Some bacteria, fungi, or other microbes may be present in too small a number to be seen under a microscope. Therefore, the culture method is important for correctly identifying the infectious agent.

PCR Tests

Polymerase chain reaction (PCR) is an advanced laboratory method used to detect the genetic material of the microorganism causing the infection. With PCR testing, even very small amounts of DNA or RNA can be identified. This method is widely used especially in the diagnosis of COVID-19, HIV, hepatitis, and some viral infections.

Biopsy or Aspiration

In some infectious diseases, biopsy or aspiration procedures may be needed to confirm the diagnosis and identify the microorganism causing the infection. Thanks to biopsy and aspiration procedures, the type, spread, and underlying causes of the infection can be evaluated in more detail. These methods make an important contribution to the diagnostic process, especially in deep tissue infections, abscesses, lung infections, and infections of unknown cause.

Imaging Methods

Imaging methods are used to evaluate the spread of the infection in the body and its effects on organs. X-ray, ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) can be used to determine the location and spread of the infection.

What Are the Treatment Methods for Infectious Diseases?

In infectious diseases, the treatment plan is determined according to the type of microorganism causing the disease. The same treatment is not used for every infection. Therefore, an accurate diagnosis is of great importance for effective treatment.

The main treatment methods used in infectious diseases are:

• Antibiotic therapy: Effective only for bacterial infections.
• Antiviral medications: Used in the treatment of viral infections.
• Antifungal medications: Applied against fungal infections.
• Antiparasitic medications: Preferred in the treatment of diseases caused by parasites.

Some mild infectious diseases may resolve on their own with rest, fluid intake, and supportive treatment. However, in severe infections, intravenous medication, close monitoring, and hospitalization when necessary may be required.

How Can Infectious Diseases Be Prevented?

Infectious diseases arise as a result of infections caused by viruses, bacteria, fungi, and parasites. These diseases can be transmitted from person to person, from animals to humans, through insect bites, or via contaminated water and food. To protect against infectious diseases, it is very important to pay attention to hygiene rules in daily life and take the necessary precautions.

The main points to pay attention to in order to prevent infectious diseases are:

• Wash hands regularly and properly
• Cook food safely
• Store food under appropriate conditions
• Pay attention to drinking clean water
• Follow hygiene rules in crowded environments
• Avoid close contact with sick people
• Do not go to work, school, or crowded places when ill
• Do not share personal items such as razors, toothbrushes, and towels
• Pay attention to safe sex rules
• Learn about the necessary vaccinations and infectious disease risks before traveling abroad
• Use protective measures against insect and tick bites

When Should You Consult for Infectious Diseases?

The Infectious Diseases Department should be consulted when symptoms such as long-lasting fever with no identified cause, recurrent infections, persistent cough, ongoing fatigue, rash, diarrhea, urinary tract infections, or unexplained weight loss are present.

Especially in cases of fever lasting several weeks and whose cause cannot be identified with standard tests, it is important to be evaluated by an infectious diseases specialist. Fever, rash, diarrhea, or respiratory symptoms developing after travel to tropical countries or regions where infectious diseases are common also require specialist evaluation.