system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 44-year-old man comes to the physician for a follow-up examination. Ten months ago, he was diagnosed with HIV infection and appropriate antiretroviral therapy was initiated. Physical examination shows no abnormalities. Laboratory studies show increased viral load despite ongoing treatment. His pharmacotherapy is switched to a new combination drug regimen including an agent that binds to glycoprotein 41. The expected effect of this drug is most likely due to inhibition of which of the following?
assistant
Viral fusion and entry into host cells