Branch links a health milestone to the field of medicine it belongs to. Wikipedia describes smallpox as "an infectious disease caused by the variola virus," and its eradication is remembered chiefly within virology and vaccine science. This dimension groups milestones that belong to the same field of health work.
Facts
Comparison
Era of EmergenceSourced to the subject's own account Branch
Sources
1. Wikipedia: Sanitation
WikipediaSanitation, History section, ancient RomeQuote, Sanitation, History section, ancient Rome
The first sewers of ancient Rome were built between 800 and 735 BCE.
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