What was a significant outcome of John Snow's evidence during the cholera outbreak?

The significant outcome of John Snow's evidence during the cholera outbreak was the removal of the Broad Street water pump. John Snow conducted an investigation into the cholera outbreak in London during the mid-19th century and famously mapped the cases of cholera in relation to sources of water. His findings indicated a strong correlation between the contaminated water from the Broad Street pump and the spread of cholera, suggesting that the disease was waterborne rather than airborne as was commonly believed at the time.

As a result of Snow's evidence, local authorities were persuaded to remove the handle of the pump, significantly reducing the incidence of cholera in the area. This action became a pivotal moment in the history of public health and demonstrated the importance of sanitation and clean drinking water in preventing disease.

The other options do not accurately reflect the immediate historical implications of Snow's work. Public hospitals were not closed as a result of his findings; rather, his research contributed to a better understanding of infectious diseases and eventually led to improvements in public health measures. Doctors did not universally agree with Snow's findings immediately, as there was considerable skepticism towards his ideas at first. Additionally, while Snow's work eventually influenced the development of public health practices, it did not directly lead to new pharmaceutical