A Study of LY3819253 (LY-CoV555) in Healthy Participants

Inclusion Criteria:

• Are overtly healthy as determined by medical evaluation including medical history and physical examination
• Are willing to follow study procedures, including having nasal or nasopharyngeal swabs collected
• Have a body mass index (BMI) within the range of greater than or equal to (≥)18.5 to less than (<)35 kilograms per square meter (kg/m²)
• Male participants must agree to adhere to contraception restrictions
• Female participants must be of non-childbearing potential

Exclusion Criteria:

• Have or have had known or suspected severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection

• Have a history or presence of cardiovascular (including hypertension), respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, psychiatric, or neurological disorders that, in the opinion of the investigator, are capable of

  • Significantly altering the absorption, metabolism, or elimination of drugs
  • Constituting a risk while taking the investigational product, or
  • Interfering with the interpretation of data
• Have significant allergies to humanized monoclonal antibodies (mAbs)

• Have any of the following that are clinically significant:

  • Multiple or severe drug allergies, or
  • Intolerance to topical corticosteroids, or
  • Severe posttreatment hypersensitivity reactions (including, but not limited to, erythema multiforme major, linear immunoglobulin A dermatosis, toxic epidermal necrolysis, or exfoliative dermatitis)
• Have had lymphoma, leukemia, or any malignancy within the past 5 years, except for basal cell or squamous epithelial carcinomas of the skin that have been resected with no evidence of metastatic disease for 3 years
• Have had breast cancer within the past 10 years
• Show evidence of human immunodeficiency virus (HIV) infection and/or positive human HIV antibodies
• Show evidence of current hepatitis C (that is, test positive for anti-hepatitis C antibody with confirmed presence of hepatitis C virus [HCV] ribonucleic acid [RNA])