Bone marrow is a soft, gelatinous tissue found within the hollow spaces of bones.

The Centers for Disease Control and Prevention (CDC) is a national public health agency in the United States.

Emergency medical services (EMS), also known as ambulance services or paramedic services, are emergency services that provide urgent pre-hospital treatment and stabilisation for serious illness and injuries and transport to definitive care.

HIV, or Human Immunodeficiency Virus, is a retrovirus that attacks the immune system of humans, leading to the acquired immunodeficiency syndrome (AIDS).

HIV/AIDS is a global pandemic caused by the human immunodeficiency virus (HIV).

Medication is a term used to describe any substance administered to a person or animal for the purpose of treating, curing, or preventing a medical condition.

The National Health Service Corps (NHSC) is part of the United States Department of Health and Human Services, division of Health Resources and Services Administration, Bureau of Health Workforce.