For a general discussion of the seasonality of respiratory viruses, written for the layperson, please see
Every winter, colds and flu increase
For detailed scientific information about the seasonality of respiratory viruses, including discussion of the trade-off model, viral dormancy and much else, see my 2016 paper:
For a discussion of the strange timing and duration of influenza epidemics, please see
The strange arrivals – and departures – of influenza epidemics in the UK, 1946-1974
Applications to Covid-19
For information about the probable seasonality of Covid-19, and whether we can expect it to become rarer in the summer, or reappear in the fall, please see
Predicting the seasonality of Covid-19
For comments about the epidemiology of Covid and other respiratory illnesses, please see
Epidemiology of respiratory illness
For discussion of how the trade-off model can be applied to the Covid epidemic see
Covid 19 and the trade-off model
For a simple model of the transmission of viruses such as CoV-2, please see
A simple model of CoV-2 transmission
For comments about how quickly we can expect viruses to adapt to new environments, please see
Adaptability or respiratory viruses
For more detailed scientific points about CoV-2, see
Technical notes on CoV-2 for scientists
For practical tips on avoiding respiratory illness see
Suggestions for avoiding colds and flu – and Covid-19