Vaccine

{
  "id": "MLC-T-ENV-029445",
  "term": "Vaccine",
  "field": "Environment",
  "definition": "1. Suspension of live (usually attenuated) or inactivated microorganisms (e.g. bacteria or viruses) or fractions thereof administered to induce immunity and prevent infectious diseases and their sequelae. Some vaccines contain highly defined antigens (e.g., the polysaccharide of Haemophilus influenzae type b or the surface antigen of hepatitis B); others have antigens that are complex or incompletely defined (e.g. Bordetella pertussis antigens or live attenuated viruses).\n\n2. A suspension of attenuated live or killed microorganisms, administered to induce immunity and thereby prevent infectious disease.",
  "references": [
    "CDC Vaccines and Immunizations Glossary",
    "EPA Emergency Responder Health and Safety Manual -Chapter 9: Chemical and Biological Agents"
  ],
  "url": "https://mlchart.com/terminology/environment/vaccine/"
}