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Generalized Treatment as Prevention Plus Focused Pre-Exposure Prophylaxis Is the Key to Controlling HIV/AIDS.

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Combining Treatment as Prevention (TasP) and Pre-Exposure Prophylaxis (PrEP) significantly reduces HIV transmission. This synergistic approach accelerates progress toward ending the HIV/AIDS pandemic.

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Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Control

Background:

  • Treatment as Prevention (TasP) and Pre-Exposure Prophylaxis (PrEP) are key biomedical strategies for HIV/AIDS control.
  • TasP involves immediate antiretroviral therapy (ART) for people living with HIV (PLWH), preventing AIDS progression and transmission.
  • PrEP offers protection against HIV acquisition for high-risk, adherent individuals.

Purpose of the Study:

  • To evaluate the synergistic impact of a "generalized TasP + focused PrEP" program in British Columbia on reducing HIV transmission.
  • To assess the combined effectiveness of TasP and PrEP in controlling the HIV effective reproduction number (Re).

Main Methods:

  • Implementation of a "generalized TasP + focused PrEP" program in British Columbia over two decades.
  • Long-term monitoring of community plasma viral load (pVL) suppression for TasP effectiveness.
  • Monitoring of HIV incidence among high-risk populations for PrEP effectiveness.

Main Results:

  • The combined "generalized TasP + focused PrEP" program demonstrated synergistic effects in reducing the HIV effective reproduction number (Re).
  • TasP reduced HIV incidence by lowering the pool of transmissible HIV through viral load suppression.
  • PrEP reduced new infections among susceptible individuals, independent of viral load suppression.

Conclusions:

  • The combination of generalized TasP and focused PrEP is a highly effective strategy for controlling HIV/AIDS.
  • Widespread implementation of this combined approach is strongly supported.
  • Continuous programmatic monitoring of Re is crucial for optimizing TasP and PrEP programs and achieving global HIV/AIDS elimination goals.