Neisseria gonorrhoeae: a historical model for host adaptation.

Neisseria gonorrhoeae research has been shaped by early human-focused observations, including restriction to the human host and lack of durable protective immunity, before mechanisms were known.

• Why it matters: Early clinical and experimental findings set the field’s key questions and constraints, leaving “historical paradoxes” that later work needed to explain mechanistically.
• What they did: The work traces how early clinical observations, human inoculation studies, and initial vaccine trials informed later genomic and molecular investigations, including targets for variable surface structures and surveillance of horizontally acquired resistance determinants.
• The result: Modern mechanistic studies have provided explanations for long-standing observations, enabling today’s vaccine design and resistance monitoring to directly address the same experimental challenges identified historically.

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