


London has been hit by numerous epidemics for which it had no remedy.
Londoners in the 17th century knew that plague would return but were powerless to stop it.
During the deadly Spanish Flu outbreak of 1918-19, influenza was still thought to be caused by bacteria. There was no known way of preventing or curing it, until the development of flu vaccines in the late 1930s.
Today, London has a good public health infrastructure, robust monitoring systems and preventative medicines for some diseases. However, depending on the transmission method of our next epidemic, Londoners could still be at risk. Indeed, London is described as the tuberculosis capital of Western Europe.
Editors note added in 2020: As the current Covid-19 crisis demonstrates, London is vulnerable to epidemics spread through respiratory droplets.

Street Life in London, John Thomson, c 1877
This image shows a street ‘doctor’ peddling patent remedies.