With no end in sight in Europe's second surge in COVID-19 cases, the United Kingdom announced another lockdown today—the fifth European country to do so—as the global case total sped past 46 million people.WHO: a critical moment for actionAt a media briefing today, World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus, PhD, said the continuing spike in cases in some European countries and in North America are "another critical moment for action."He urged national leaders to step up and for the public to do their part to suppress transmissions in an effort to prevent hospitals from reaching capacity, which poses a risk to patients and health workers.