A different study will be conducted.

This is a placebo-controlled study to investigate the safety and efficacy of a single injection of COVI-AMG in inpatient adults with COVID-19.

This is a multi-center, randomized, double-blind, placebo-controlled study designed to investigate the safety and efficacy of a single injection of COVI-AMG in inpatient adults with COVID-19. Subjects will receive 100 mg of COVI-AMG, 200 mg of COVI-AMG, or placebo via slow IV push. Subjects will be followed for approximately 70 days post dosing.

Inclusion Criteria:

• Positive for COVID-19 by an approved antigen test
• Progressive disease suggestive of ongoing COVID-19 infection
• Requires hospitalization for acute medical care
• Provides written informed consent
• Willing to follow contraception guidelines during study

Exclusion Criteria:

• Requires high-flow oxygen supplementation
• Current or imminent respiratory failure
• Has rapidly progressing symptoms that in the investigator's opinion are likely to progress to needing high-flow oxygen or to respiratory failure within 24 to 48 hours
• Any condition which, in the investigator's opinion, participation would not be in the subject's best interest or could prevent, limit, or confound the protocol-specified assessments
• Has participated, or is participating in, a clinical research study evaluating COVID-19 convalescent plasma, monoclonal antibodies against SARS-CoV-2, or intravenous immunoglobulin within 3 months or less than 5 half-lives of the investigational product (whichever is longer)
• Pregnant or lactating and breast feeding, or planning on either during the study
• Unable to comply with planned study procedures and be available for all follow-up visits