What did he do?
He was a public health activist who lived in the 19th century. He was studying to be a lawyer when he became interested in public health and political and social form. He needed to use science to investigate the living of the poor. He believed in the miasma theories and therefore suggested cleaning. Good sanitation, drainage, ventilation would make people healthier.
What did he do to improve public health?
He ensured after cholera and the epidemic of influenza came out that the government would change the sewages and bring fresh water supplies to the towns. He made new enquiries about sanitation and…