An epidemic is the rapid spread of disease within a population over a short time. A pandemic is defined as an epidemic of disease that has spread across a wide area, i.e. over multiple continents or worldwide, affecting a substantial number of people. COVID-19 is the 2nd pandemic of the 21st century, the first being in 2009 caused by H1N1- 'swine flu' virus.
May's newsletter from The George Farm Vets covers the topical subject of viruses and how they do what they do. Click the link below to open.