Infectious Diseases
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Private OPD Timing
Dr Sushil Mishra
Days
Registration Timing
Tuesday
10:00 AM To 12:30 PM
Wednesday
10:00 AM To 03:30 PM
Friday
10:00 AM To 12:30 PM
Dr Varun Menon
Days
Registration Timing
Tuesday
11:00 AM To 03:00 PM
Friday
11:00 AM To 03:00 PM
Department
Department
Get Directions
Reachable (8:30am-4pm)
011-2396621-27
Infectious Diseases
The Department of Infectious Diseases at St. Stephen’s Hospital diagnoses and treats infections — from the routine to the unusual. India remains a country where infection is a major cause of illness, and Delhi sees a particular mix of urban, tropical, and antibiotic-resistant infections.
Our team is built around accurate diagnosis, rational antibiotic use, and long-term follow-up for chronic infections like HIV, hepatitis, and tuberculosis. We work closely with our laboratory, microbiology, and other clinical departments — because the right answer in infectious disease usually depends on more than one specialist looking carefully at one patient.
Conditions we treat
- Dengue, chikungunya, and other vector-borne infections
- Typhoid and other gastrointestinal infections
- Tuberculosis (TB) — including drug-resistant TB
- HIV — diagnosis, antiretroviral therapy, and long-term care
- Viral hepatitis (A, B, C, D, E)
- Pneumonia and other complex respiratory infections
- Urinary tract infections — recurrent or resistant
- Skin and soft tissue infections
- Fever of unknown origin
- Hospital-acquired and antibiotic-resistant infections
- Tropical infections and travel-related illness
- COVID-19 and other emerging infections
Services and procedures
Diagnostic services
- Specialist infection consultation: for unclear, complex, or non-responsive infections.
- Targeted infection testing: including molecular testing, cultures, and specialist serology.
- Fever workup: structured investigation for prolonged or unexplained fever.
- TB diagnostics: including GeneXpert, AFB testing, and imaging.
- HIV testing and counselling: confidential, voluntary testing with full pre- and post-test support.
Treatment and long-term care
- Antibiotic stewardship: rational antibiotic use, especially for resistant or unusual infections.
- HIV care: antiretroviral therapy, monitoring, opportunistic infection prevention.
- TB treatment: DOTS-aligned care, including for drug-resistant TB.
- Viral hepatitis treatment: in coordination with Hepatology.
- Inpatient infection care: for sepsis, complicated infections, and immunocompromised patients.
- Pre- and post-transplant infection care: for patients on immunosuppression.
Prevention and travel medicine
- Adult vaccination clinic: Hepatitis B, influenza, pneumococcal, typhoid, and others.
- Travel vaccinations: before travel to high-risk countries.
- Post-exposure prophylaxis (PEP): for needlestick injuries and other exposures.
When to see us
- You have a fever that has not settled in over a week.
- You have a known infection that is not responding to treatment.
- You have been diagnosed with HIV, hepatitis, or TB and need specialist care.
- You travel frequently and need pre-travel advice or vaccinations.
- You have recurrent urinary tract infections or skin infections.
- Your doctor has referred you because of an unusual or resistant organism on a test.
Why choose St. Stephen's Hospital
- Specialist physicians focused exclusively on infections.
- Strong partnership with our Microbiology laboratory for accurate diagnosis.
- Rational, evidence-based prescribing — not antibiotics for everything.
- Confidential, respectful care for HIV and other sensitive conditions.
- Empanelled with CGHS, ECHS, and major insurers.
Frequently asked questions
Why was I told not to take antibiotics for my viral fever?
Antibiotics only work against bacteria. They do nothing for viral infections like flu, dengue, chikungunya, or most cold and cough illnesses. Taking them anyway is one of the main causes of antibiotic resistance — which is a serious and growing problem. The right thing is often the simpler thing: rest, fluids, and time.
Is HIV care confidential?
HIV care is strictly confidential. We do not share information without your consent, and you will be treated with the same dignity as any other patient. With modern treatment, people with HIV live long, healthy lives — and starting treatment early makes the biggest difference.
I keep getting urinary tract infections. Why?
Recurrent UTIs are common, especially in women, but they need proper investigation. Possible reasons range from an underlying problem in the urinary tract to inadequate previous treatment. We work through this systematically rather than just prescribing more antibiotics.
Do I need travel vaccinations for India domestic travel?
Usually not, though some regions have specific risks (such as Japanese encephalitis in certain areas). For international travel, recommendations depend on the destination, season, and your own health. A pre-travel consultation 4 to 6 weeks before departure is ideal.
Meet our Doctors
Dr. Leiyami Kasar
Infectious Diseases (HOD)Ask Any Question If You Have
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