People gather in central London after restrictions in England are lifted on the 19th of July Wiktor Szymanowicz/Anadolu Agency via Getty ImagesBACK IN March, it appeared that an end to the coronavirus epidemic was in sight. As vaccination rates rose, the number of covid-19-positive cases fell in the UK and US. It appeared that the same could happen in other countries around the globe.The second wave of the devastating tsunami that struck India in 2001 was caused largely by a new strain known as delta. The number of cases rose once more after delta spread to other countries.
