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A graduated barrel with a plunger and a fine needle.
Also known as: Injection symbol, Vaccination symbol
A syringe stands for injection, vaccination and, in some contexts, for drug use. The same outline carries all three, and which one a reader takes depends almost entirely on where they see it.
Marks injection or vaccination — on clinic signage, immunisation records and health interfaces.
Contexts: Medicine
Also used to mark sharps disposal and, in public-health and news contexts, injecting drug use. The outline is identical; the reading comes from context alone.
A long narrow barrel marked with graduation lines, a flanged plunger at one end and a fine tapering needle at the other.
Sharps bins carry both: the syringe says what goes in, the biohazard mark says what the contents are.