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Conference on Bacteriophages
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Vivek Mutalik, PhD
University of California San Francisco
Professor of Medicine, Emeritus
San Francisco, CA
Vance G. Fowler, MD
University of California San Francisco
Professor of Medicine, Emeritus
San Francisco, CA
Victoria A. Johnson, MD
University of California San Francisco
Professor of Medicine, Emeritus
San Francisco, CA
Vincent Calvez, MD, PhD
University of California San Francisco
Professor of Medicine, Emeritus
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Victor G. Valcour, MD, PhD
University of California San Francisco
Professor of Medicine, Emeritus
San Francisco, CA
Victoria A. Cargill, MD, MSCE
University of California San Francisco
Professor of Medicine, Emeritus
San Francisco, CA
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CROI
Conference on Bacteriophages
RWHAP CLINICAL CONFERENCE
Podcasts
Slides
Question of the Week
Donate
Contact
CME Courses
HIV In-Person and Virtual Courses
Current On-Demand Courses
About Courses
CME Webinars
Upcoming Webinars
Current On-Demand Webinars
MATE Act CME
About Webinars
Dialogues
Upcoming IAS–USA Dialogues: Emerging Infections and Health Threats
On-Demand Dialogues
About Dialogues
Topics In Antiviral Medicine
Current Issues for CME
Previous Issues
TAM
Policies and Practices
Permission Request Form
HIV Drug Resistance
HIV Drug Resistance Mutations Chart
Recent Webinars
Journal Articles
Fellow Resources
Resources for Fellows and Others New to the HIV Field
On-Demand Webinars for Fellows
IAS-USA Guidelines and Recommendations
On-Demand Webcasts
Research Collaborations
Additional Resources
About
Scientific Leadership Board
IAS-USA Leadership Award Recipients
Core Faculty
Mission
Staff
CME
Funding Information
Careers
Website Policies
Discrimination and Harassment Policy
Governance
Suggestions and Recommendations from San Francisco Locals
FAQs
Practice Question of the Week
January 13, 2026: HIV Prevention and Coinfections
A 27-year-old man was recently diagnosed with syphilis. An HIV test was negative. He was also recently exposed to a person with active tuberculosis and presents to care with cough and shortness of breath. He worries about his risk for HIV, sexually transmitted infections, and other infections and is interested in HIV prevention. Which of the following statements is correct and can inform this patient’s care?
A. A recent analysis in Africa integrated HIV preexposure prophylaxis (PrEP) and postexposure prophylaxis (PEP) choices with self-assessed risk for HIV acquisition. It showed poor adherence and cost-effectiveness in that setting
B. Analysis of HIV prevention studies over the past 15 years suggests that HIV incidence has declined substantially
C. Doxycycline PrEP substantially decreases risk for syphilis and chlamydia, with no significant increase in tetracycline-resistant
Neisseria
,
Staphylococcus
, or
Streptococcus
D. Stool testing improves the yield of tuberculosis diagnostic testing
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