Dear Editor,rnDuring the early spring of 2020,as the COVID-19(coronavirus disease 2019)pandemic spread across the globe like a viral tsunami,many countries urgently imple-mented unprecedented mitigation measures to slow it down,following the example of China,where the disease first emerged at the end of 2019.As a result,more than 3 billion unprepared people worldwide had to cope with living under stringent lockdown measures for weeks or months,dependingrnon the country.