HIV Cluster and Outbreak Detection and Response: The Science and Experience

Area of Science:

• Public Health
• Epidemiology
• HIV Prevention

Background:

• The Ending the HIV Epidemic in the U.S. initiative utilizes a "Respond" pillar focused on cluster and outbreak detection and response.
• This strategy aims to guide the tailored implementation of proven HIV prevention methods in areas with rapid transmission.

Purpose of the Study:

• To review experiences from 30 HIV cluster and outbreak responses in North America (2000-2020).
• To describe approaches for implementing core response strategies within these outbreaks.
• To highlight the role of the Respond pillar in strengthening HIV prevention efforts.

Main Methods:

• Analysis of data from 30 HIV cluster and outbreak responses.
• Description of strategies for understanding transmission networks.
• Identification of methods for linking individuals to essential services and addressing service gaps.

Main Results:

• Successful implementation of response strategies has led to improved HIV care and viral suppression.
• Demonstrated success in increasing testing rates and use of prevention services.
• Observed reductions in HIV transmission and new diagnoses.

Conclusions:

• Cluster and outbreak response strengthens prevention efforts through multidisciplinary, multisector collaboration.
• The Respond pillar exemplifies a collaborative, data-guided approach essential for the Ending the HIV Epidemic initiative.
• Addressing service delivery gaps identified through outbreak detection enhances overall HIV prevention.