Trial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Pre- and Post Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses (VRI) in Healthcare Workers and Others at Increased Risk of SARS-CoV-2 Infection

The New York Center for Travel and Tropical Medicine, New York

RH Medical Urgent Care Professional PLLC, The Bronx

Integrative Clinical Trials LLC, Brooklyn

Clinical Neuroscience Solutions, Inc., Orlando

New Horizon Research Center, Miami

Invesclinica US LLC, Fort Lauderdale

Meris Clinical Research, Brandon

Tampa General Hospital, Tampa

DMI Research, Pinellas Park

The Chappel Group Research, Kissimmee

Vida Clinical Studies, Dearborn

Chicago Medical Research, LLC, Hazel Crest

Chicago Clinical Research Institute, Inc., Chicago

Chicago Medical Research Institute, Inc., Chicago

Quad Clinical Research, Chicago

Beacom Family Health Connection, Fremont

Centex Studies, Inc., Lake Charles

HealthStar Research LLC, Hot Springs

SMS Clinical Research LLC, Mesquite

Centex Studies, Inc., Houston

LinQ Research LLC, Pearland

BFHC Research, San Antonio

Rio Grande Valley Clinical Research Institute, Pharr

Long Beach Clinical Trials, LLC, Long Beach

So Cal Clinical Research, Huntington Beach

North Jersey Community Research Initiative, Newark