Professor Li Taisheng: HIV, Fever of Unknown Origin, and Complex Infection Specialist
Professor Li Taisheng is director of the Department of Infectious Diseases and the HIV/AIDS Diagnosis and Treatment Center at Peking Union Medical College Hospital. He is a senior physician, professor, doctoral supervisor, and a leading specialist in HIV medicine, immune recovery after antiretroviral therapy, fever of unknown origin, and complex infectious disease.
International patients can learn more about the hospital, multidisciplinary services, and consultation preparation in our Peking Union Medical College Hospital international patient guide.
Clinical and Academic Focus
- HIV diagnosis and antiretroviral treatment;
- incomplete CD4 immune recovery;
- opportunistic infections;
- fever of unknown origin;
- complex bacterial, viral, fungal, and parasitic infections;
- infection in immunocompromised patients;
- treatment toxicity and drug interactions;
- post-exposure and prevention counseling; and
- second opinions after persistent or recurrent infection.
HIV Diagnosis and Treatment
Modern antiretroviral therapy can suppress HIV, restore immune function, prevent opportunistic disease, and support long-term health. Treatment selection depends on resistance, organ function, coinfections, previous medicines, pregnancy considerations, and potential drug interactions.
Viral suppression also prevents sexual transmission when it is durably maintained, commonly described as undetectable equals untransmittable. This depends on confirmed adherence and appropriate viral-load monitoring.
Professor Li’s landmark research helped demonstrate that highly active antiretroviral therapy can produce sustained recovery of CD4 T-cell function in people with advanced HIV disease.
Incomplete Immune Recovery
Some patients achieve an undetectable viral load but their CD4 count remains low. This is sometimes called an immunological non-response or incomplete immune reconstitution.
Evaluation should consider age, lowest previous CD4 count, duration before treatment, coinfections, bone-marrow disease, medication effects, nutrition, and other immune conditions. Simply changing an effective antiviral regimen may not improve CD4 recovery.
Professor Li’s team continues to study immune heterogeneity and potential interventions for patients with inadequate immune restoration. Investigational treatment should be used only under an approved clinical protocol.
Opportunistic Infections
People with advanced immune suppression can develop tuberculosis, Pneumocystis pneumonia, cryptococcal disease, cytomegalovirus, toxoplasmosis, fungal infection, and other conditions. Symptoms can be subtle or involve multiple organs.
Management requires targeted microbiological testing, treatment of the infection, careful timing of antiretroviral therapy, prevention of drug interactions, and monitoring for immune reconstitution inflammatory syndrome.
Fever of Unknown Origin
Persistent unexplained fever can result from infection, autoimmune disease, cancer, medication, thrombosis, or another inflammatory condition. Repeating broad tests without a structured diagnostic plan can delay the diagnosis and expose patients to unnecessary treatment.
Evaluation starts with a detailed timeline, exposure and travel history, medication review, repeated examination, and targeted laboratory, imaging, microbiology, pathology, or genetic testing.
Complex Infection in Immunocompromised Patients
Patients receiving chemotherapy, transplantation, corticosteroids, biologic therapy, or other immunosuppression can develop unusual infections and may not show typical fever or inflammatory responses.
Diagnosis may require cultures, molecular testing, antigen or antibody assays, bronchoscopy, biopsy, and coordination with hematology, oncology, rheumatology, or transplant teams.
Antimicrobial Resistance and Safety
Antibiotic selection should consider the likely organism, infection site, local resistance, cultures, organ function, allergies, and previous exposure. Unnecessary broad-spectrum treatment can cause toxicity and increase antimicrobial resistance.
Patients should not stop antiretroviral therapy or change infection treatment without specialist guidance.
Who May Consider a Consultation?
- patients with newly diagnosed or treatment-experienced HIV;
- patients with suppressed HIV but persistently low CD4 counts;
- patients with suspected opportunistic infection;
- patients with prolonged unexplained fever;
- immunocompromised patients with recurrent or unusual infection;
- patients with resistance, toxicity, or complex drug interactions;
- patients whose infectious and inflammatory diagnoses remain uncertain; or
- patients seeking a second opinion on long-term HIV management.
Medical Records to Prepare
- a precise symptom, exposure, travel, and treatment timeline;
- all HIV antibody, antigen, viral-load, CD4, and resistance results;
- complete antiretroviral history with response and side effects;
- microbiology cultures, PCR, antigen, serology, and pathology reports;
- CT, MRI, PET-CT, ultrasound, and chest imaging in original format;
- records for tuberculosis, hepatitis B and C, and other coinfections;
- immune, rheumatology, hematology, and cancer evaluations;
- recent blood count, kidney and liver function;
- a complete medication and supplement list; and
- a clear list of diagnostic and treatment questions.
Planning an International Consultation
Severe breathing difficulty, confusion, low oxygen, shock, new neurological symptoms, or rapidly worsening fever in an immunocompromised patient requires immediate local hospital care. International travel must not delay urgent treatment.
Stable patients should confirm whether records and laboratory data can be reviewed. Remote medical-record review requires physician authorization. Final diagnosis or treatment adjustment may require examination, repeat microbiology, imaging, or biopsy.
How CMCS Can Assist
CMCS – China Medical Concierge Shanghai is an independent medical concierge and health management company, not a hospital. We assist international patients with securely organizing and translating infectious-disease records, identifying an appropriate specialist, requesting appointment availability, arranging interpretation, and planning medical travel in China.
Access to Professor Li, remote review, admission, testing, or a clinical trial is subject to doctor and hospital approval. CMCS does not guarantee appointments, diagnosis, trial eligibility, or clinical outcomes.
- Email: contract@medicalsh.com
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Privacy and Important Note
HIV and infectious-disease information is sensitive medical data. Records should be shared only with the patient’s authorization and through appropriate secure channels.
Doctor titles, clinical roles, testing, treatment availability, and appointment arrangements may change. This profile is based on the supplied verified research document and is for general information only. It does not replace assessment by a qualified infectious-disease team.
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