The global COVID-19 pandemic, which has claimed more than 6,500 lives, is the defining health crisis of our time, the head of the World Health Organization said Monday. "This is the defining global health crisis of our time," WHO chief Tedros Adhanom Ghebreyesus told reporters in a virtual news conference Monday, adding that "Crises like this tend to bring out the best and worst of humanity." nl/rjm