 "Coronavirus, tests, vaccine, covid, lockdown, second wave")
What is a second Sars-CoV-2 wave?
A second wave is a phenomenon of infections that can develop during a pandemic. The disease infects one group of people first, and then the infections appear to go down. But then, the infections rise in a different part of the population, resulting in what is commonly known as a second wave of infections.
Europe, for example, is now suffering from a second wave of the Sars-CoV-2 virus attack. The level of infections started rising after restrictions were significantly eased during summer. Many countries are now forced to re-introduce targeted, localised restrictions, though not a complete
