A Study of Doravirine/Islatravir (DOR/ISL, MK-8591A) for the Treatment of Human Immunodeficiency Virus 1 (HIV-1) Infection in Participants Who Previously Received DOR/ISL (MK-8591A-054)

Hôpitaux Universitaires de Genève (HUG)-Infectious Disease Department ( Site 2804), Geneva

Holdsworth House Medical Practice ( Site 1100), Darlinghurst

St Vincent's Hospital-IBAC ( Site 1103), Sydney

Perinatal HIV Research Unit (PHRU)-Adult Treatment and Research ( Site 2605), Johannesburg

Helen Joseph Hospital-Clinical HIV Research Unit ( Site 2609), Johannesburg

Ezintsha-Clinical Research Site ( Site 2607), Johannesburg

Inselspital Bern-Inselspital Infektiologie ( Site 2803), Bern

Prahran Market Clinic ( Site 1102), Melbourne

Holdsworth House Medical Practice - Brisbane ( Site 1101), Brisbane

Wentworth Hospital ( Site 2604), Durban

University Hospital Basel-Infectiology ( Site 2802), Basel

Ospedale Regionale di Lugano, Sede Civico-Servizio Malattie Infettive ( Site 2805), Lugano

Family Clinical Research Unit (Fam-Cru)-Adult Infectious Diseases ( Site 2608), Cape Town

Be Part Yoluntu Centre ( Site 2601), Paarl

Desmond Tutu Health Foundation ( Site 2602), Cape Town

Christchurch Hospital-Infectious Diseases ( Site 2200), Christchurch

UniversitätsSpital Zürich ( Site 2800), Zurich

Cantonal Hospital St.Gallen ( Site 2801), Sankt Gallen

Josha Research ( Site 2603), Bloemfontein

Icahn School of Medicine at Mount Sinai-Clinical and Translational Research Center ( Site 3134), New York

Penn Medicine: University of Pennsylvania Health System-Perelman Center for Advanced Medicine ( Site, Philadelphia

Georgetown University Medical Center ( Site 3130), Washington D.C.

Infectious Disease Specialists of Atlanta ( Site 3128), Decatur

Augusta University-Infectious Diseases ( Site 3135), Augusta

Mercer university, Department of internal medicine-Clinical Research ( Site 3129), Macon

Chatham County Health Department - Chatham CARE Center-Infectious Disease ( Site 3105), Savannah

Orlando Immunology Center ( Site 3106), Orlando

Bliss Healthcare Services ( Site 3115), Orlando

Floridian Clinical Research, LLC ( Site 3133), Miami Lakes

AHF The Kinder Medical Group ( Site 3108), Miami

Therafirst Medical Center ( Site 3110), Fort Lauderdale

Triple O Research Institute, P.A ( Site 3116), West Palm Beach

CAN Community Health - Sarasota ( Site 3118), Sarasota

Midway Immunology and Research Center ( Site 3117), Ft. Pierce

University of Alabama at Birmingham-UAB 1917 Research Clinic ( Site 3104), Birmingham

KC CARE Health Center ( Site 3103), Kansas City

Sourasky Medical Center ( Site 1904), Tel Aviv

North Texas Infectious Diseases Consultants, P.A ( Site 3100), Dallas

DCOL Center for Clinical Research ( Site 3119), Longview

Texas Centers for Infectious Disease Associates ( Site 3111), Fort Worth

The Crofoot Research Center ( Site 3101), Houston

St Hope Foundation ( Site 3121), Bellaire

Kaohsiung Veterans General Hospital ( Site 2901), Kaohsiung City

Pueblo Family Physicians ( Site 3102), Phoenix

Kaiser Permanente ( Site 3124), Los Angeles

Ruane Clinical Research Group, Inc ( Site 3126), Los Angeles

Mills Clinical Research ( Site 3114), Los Angeles

Pacific Oaks Medical Group ( Site 3123), Beverly Hills

University of California Davis Health-Internal Medicine: Infectious Diseases ( Site 3137), Sacramento

Private Practice - Dr. Peter Shalit ( Site 3120), Seattle

Multicare Institute for Research and Innovation ( Site 3127), Spokane

Moscow Infectious Diseases Clinical Hospital Number 2 ( Site 2506), Moscow

Hospital Universitario San Ignacio-Infectious ( Site 1501), Bogotá

Clinica Colsanitas S.A, Sede Clínica Universitaria Colombia ( Site 1502), Bogotá

Scientific Advisory Clinical Diagnostic Center Central Resea-Federal AIDS Center ( Site 2502), Moscow

Saint-Petersburg Center for Prophylactic of AIDS and Infecti-Saint-Petersburg Center for Prophylact, Saint Petersburg

Republican Clinical Infectious Hospital ( Site 2500), Saint Petersburg

Republican Clinical Hospital for Infectious Diseases A.F. Agafonova ( Site 2503), Kazan'

Kemerovo Regional Center for the Prevention and Control of AIDS and Infectious Diseases ( Site 2505), Kemerovo

Krasnoyarsk Regional Center for the Prevention and Control of AIDS ( Site 2504), Krasnoyarsk

Fundación Valle del Lili ( Site 1500), Santiago de Cali

Rambam Health Care Campus-Institute of Allergy, Clinical Immunology, ( Site 1901), Haifa

Clinica Universidad Catolica del Maule ( Site 1405), Talca

Hospital hernan henriquez aravena de temuco-Unidad de Investigación Clínica ( Site 1403), Temuco

Sheba Medical Center-HIV unit ( Site 1903), Ramat Gan

Biomedica Research Group-Infectology ( Site 1401), Santiago

Pontificia Universidad Catolica de Chile ( Site 1407), Santiago

Universidad de Chile - Hospital Clínico Universidad de Chile-Inmunologia Alergia y VIH ( Site 1400), Santiago

Cardio Sur ( Site 1409), Santiago

Hadassah Medical Center-Infecious Disease ( Site 1902), Jerusalem

ID Care ( Site 3131), Hillsborough

Instituto Oulton ( Site 1004), Córdoba

Instituto CAICI SRL ( Site 1003), Rosario

Helios Salud ( Site 1002), Buenos Aires

Fundación Huésped ( Site 1001), Buenos Aires

Fundación IDEAA ( Site 1005), Buenos Aires

Hamilton Health Sciences- Urgent Care Centre ( Site 1304), Hamilton

Maple Leaf Research ( Site 1301), Toronto

Toronto General Hospital ( Site 1300), Toronto

Clinique de médecine Urbaine du Quartier Latin ( Site 1305), Montreal

Clinique Medicale lActuel ( Site 1303), Montreal

McGill University Health Centre ( Site 1306), Montreal

National Hospital Organization Nagoya Medical Center ( Site 2103), Nagoya

Tokyo Metropolitan Komagome Hospital ( Site 2105), Bunkyo

Tokyo Medical University Hospital ( Site 2104), Shinjuku-ku

Center Hospital of the National Center for Global Health and Medicine ( Site 2101), Shinjyuku-ku

National Hospital Organization - Osaka National Hospital - Institute For Clinical Research ( Site 21, Osaka

Clinical Research Puerto Rico ( Site 2400), San Juan

HOPE Clinical Research ( Site 2401), San Juan

Private Practice Dr. Marleen de Jager ( Site 2600), Pretoria

University Hospitals Sussex NHS Foundation Trust ( Site 3004), East Sussex

Southmead Hospital ( Site 3003), Bristol

Royal Free Hospital ( Site 3002), London

King's College Hospital ( Site 3001), London

North Manchester General Hospital ( Site 3005), Crumpsall