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Antibody
A protein produced by B lymphocytes that binds to a specific antigen to help neutralize it.
Antigen
A molecule, usually a protein, that is recognised as foreign by the immune system and triggers an immune response.
Health
A state in which physical systems function normally, mental well-being is maintained, and individuals can cope with everyday social and psychological demands.
Herd immunity
Protection of a population when a sufficiently high proportion is immune, reducing disease transmission.
Human influence
The ways humans alter ecosystems through large-scale, rapid, and interconnected activities.
Mental health
A state of emotional and psychological well-being that allows individuals to cope with stress, work productively, and maintain relationships.
Reservoir
Any population where a pathogen can live, survive, and reproduce over time.