Last year, the World Health Organization (WHO) began assigning Greek letters to worrying new variants of the coronavirus. The organization started with Alpha and swiftly worked its way through the Greek alphabet in the months that followed. When Omicron...

COVID-19 cases in China’s largest city of Shanghai have risen again as millions remain isolated at home under a sweeping lockdown ̐(www.theguardian.com/world/2022/apr/03/covid-cases-rise-in-shanghai-as-millions-remain-in-lockdown) Health officials on Sunday reported 438 confirmed cases detected over the previous 24 hours, along with 7,788 asymptomatic...