Best Infectious Disease Specialists in Kolkata

Who is an Infectious Disease Specialist

An infectious disease (ID) doctor or specialist (also known as an Infectiologist) is a physician who specializes in infectious diseases that can affect your skin, urinary tract, lungs, blood, and virtually any region of your body.

Examples of common infectious diseases are the flu, measles, the common cold, strep throat, COVID-19, and Salmonella.

When You Don’t Need to See an Infectious Disease Doctor?

You do not need to visit an infectious disease specialist anytime you have a virus or infection, as most healthcare professionals can treat common infections and viruses.  An infectious disease doctor in Kolkata is an expert in diagnosing, managing, and treating rare, complex, serious, or long-term infections. 

Why an Infectious Disease (ID) Doctor Is Called a Detective of Organisms in the Human Body

They take tiny details of a person’s medical history or laboratory results into account and try to understand and control an infectious disease.

What Does an Infectious Disease Specialist Do

Here are the key responsibilities of an Infectiologist in Kolkata:

1. Detailed Diagnosis & Personalize the Infection Treatment

• Identify the cause of infection.
• Pinpoint the reason for the symptoms, such as high fevers or unusual lab results.
• Diagnose if the disease is caused by bacteria, viruses, fungi, parasites, or prions.
• Conduct research on how organisms affect various parts of the body and how these organisms can affect society as a whole.
• Treating an infection because of antibiotic resistance (antibiotics aren’t working).

2. Infection Control and Prevention

• Provide hygienic measures to prevent the spread of severe infection.
• Collaborate with other healthcare professionals, ensuring hospital-wide infection prevention.
• Educate society on infection prevention tips, travel-related vaccinations, and precautions.

3. Public Health and Emergency Response

• Early recognition and monitoring of emerging epidemics and pandemics.
• Help curate a health emergency preparedness plan for a natural disaster and bioemergencies.
• They actively study antiviral resistance and focus on how rapidly viruses mutate and develop resistance to antiviral medicines.

What Conditions Do Infectious Disease Doctors Treat?

There is a wide range of infections that they can treat; some of them are:

• Clostridium difficile (C diff)
• E coli
• Fevers
• Hepatitis
• Mumps
• Rubella
• Sexually transmitted infections (STIs)
• Streptococcal infections
• Tuberculosis (TB)
• Whooping cough (pertussis)
• HIV/AIDS
• Leukocytosis (high white blood cell count, (WBCs))
• Lyme disease and other tick-borne diseases
• Measles
• Meningococcal disease
• Mpox

Most Common Infectious Diseases in India

The most common infectious diseases in India are:

• Tuberculosis (TB)
• Malaria
• Dengue Fever
• Typhoid
• Hepatitis
• Diarrheal Diseases
• Influenza (Flu)
• Lower Respiratory Infections

“Infectious” Disease Specialist Qualifications in India

They need to complete an MBBS degree followed by a postgraduate qualification like MD/DNB in General Medicine, Pediatrics, Microbiology, Respiratory Medicine, or Tropical Medicine, then a super-specialty degree such as DM (3 years, NMC-recognized) or FNB/DrNB (2-3 years, NBE-recognized) in Infectious Diseases.

When to Consult the Best Infectiologist in Kolkata? The Signs

You can consult the best Infectious Disease consultant, like Dr. Soumendra Nath Halder, if you experience the following symptoms:

• Constant unexplained fever lasting for days or weeks, especially with night sweats, weight loss, chills, or fatigue.​
• Repeated episodes of infections (e.g., UTIs, respiratory issues) not responding to antibiotics.​
• Travel-related illnesses, severe rashes, coughs lasting more than 1 week accompanied by blood or mucus, or shortness of breath.​
• Infections in immunocompromised states such as HIV, cancer, diabetes, device-related (e.g., catheters), or post-surgery complications.
• Infections developed after surgery.
• Quickly spreading skin infection.

Why Choose IRIS Hospital for Treating Infectious Diseases in Kolkata

Choosing IRIS Multispeciality Hospital in Kolkata for treating infectious diseases means you are under the guidance of an experienced infectious disease specialist and a consultant team. We are equipped with the latest diagnostic and treatment technology for the accurate detection of microorganisms. We prioritize patient-centric care throughout the treatment journey (from diagnosis to post-treatment care). 

Our areas of expertise include:

• HIV/AIDS Care
• Hospital-Acquired Infections
• Travel Medicine
• Tropical Medicine (managing diseases such as malaria, dengue fever, Zika virus, chikungunya, and other vector-borne illnesses)
• Antimicrobial Stewardship (optimize antimicrobial therapy and minimize unnecessary antibiotic use)

Contact us at: +91 8929579509

Our Address: 82/1, Raja S. C. Mullick Road, Kolkata 700047 Open: 24x7

FAQs

Q1: Who are the top infectious disease specialists for diagnosis in 2026?
A: Top infectious disease specialists in 2026 are board‑certified doctors (like Dr. Soumendra Nath Halder at IRIS Multispeciality Hospital) with advanced training in internal medicine and infectious diseases. Additionally, they have experience in complex infections such as sepsis, tropical diseases, and hospital‑acquired infections.

Q2: What does an infectious disease specialist do for patient care?
A: They have the expertise to diagnose and manage illnesses caused by bacteria, viruses, fungi, and parasites, including health conditions such as tuberculosis, HIV, hepatitis, and severe infections after surgery or recent travel. 

They personalize treatment plans with antibiotics, antivirals, or other antimicrobials and advise on infection‑control measures.

Q3: How to find the best infectious disease specialists near me with telehealth options?
A: To find the best infectious disease specialists near you in Kolkata, search for “infectious disease specialist near me” or “ID doctor in Kolkata.” Always check hospital websites, medical‑board directories, and verified patient‑review platforms.

Q4: Top treatments from infectious disease specialists for antibiotic-resistant infections?
A: There is no such top treatment. However, infectious disease specialists for antibiotic‑resistant infections may use targeted, culture‑guided therapy with newer or combination antibiotics.

Q5: What qualifications should infectious disease specialists have for outbreak management?
A: They should have completed an MBBS (or equivalent), then an MD in internal medicine, followed by a DM/FNB or fellowship in infectious diseases. Plus, they should have board certification in internal medicine and infectious diseases, where applicable.