Table 2: Main air-borne viral infections and seasonal distribution | |
Virus | Season (in temperate climates) |
Coronavirus | More often in winter and spring (December-May) |
Parainfluenza viruses | Vary in their seasonal epidemiology by type |
Respiratory syncytial virus | October-January |
Metapneumovirus | Late winter and early spring (peak in March) |
Influenza | Almost exclusively in the winter (November-March in the northern hemisphere, May-September in the southern hemisphere) |