The 200 common cold viruses are more prevalent in the British winter. That's mainly because indoor relative humidity drops below the comfort threshold of 40%, making it easier for them to infect. Being infected with one makes us more vulnerable to others, enhancing the misery of the winter 'flu season'.
Posts about COVID-19:
Modernist architecture in the early 20th century adopted the Licht und Luft principle, maximising light and ventilation to combat tuberculosis. Amid another airborne disease pandemic, the same principles apply: the ultraviolet component of sunlight kills viruses and good ventilation is an established approach to limit airborne transmission.
The urban environment facilitates respiratory virus transmission. COVID-19 is now the major threat but the common cold has long had a serious impact on wellbeing, personal income and the economy. The factors by which urban living aids virus transmission are known but little attempt has been made to address them.