"John Snow showed that London's cholera outbreak arose from bad water, not the moral failings of the poor. His legacy can help tackle new problems like Covid-19."
"John Snow showed that London's cholera outbreak arose from bad water, not the moral failings of the poor. His legacy can help tackle new problems like Covid-19."
John Snow showed that London's cholera outbreak arose from bad water, not the moral failings of the poor. His legacy can help tackle new problems like Covid-19.
John Snow showed that London's cholera outbreak arose from bad water, not the moral failings of the poor. His legacy can help tackle new problems like Covid-19.