COVID-19 - Epidemic ' Waves ' , CEBM

COVID – ' wave ' or sporadic outbreaks? The theory of pandemics is murky. The best known is the cyclical theory based on influenza occurrence. This foresees cycles of infection when the natural immunity to the previous agent dies out with the passing away of survivors. This cycle up until recently was thought to span 70 years approximately. However, this theory does not fit all the evidence and the rise of other microbiological agents such as coronaviridae imposes a radical rethink and proper investigation of the ecology of the lesser-known respiratory agents. The disappearance of a respiratory virus for decades with a sudden reappearance, in some cases virtually unchanged requires serious investigation. Meanwhile, the chaotic nature of epidemics and their consequent disruption should lead us to be cautious about forecasting the future. We do not know for certain whether COVID will recur in phases, or sporadic outbreaks or disappear altogether.
Source: Current Awareness Service for Health (CASH) - Category: Consumer Health News Source Type: news