The head of the World Health Organization (WHO) European office today said that the region's 4-week drop in cases is good news but warned that outbreaks and community transmission involving variants is increasing, requiring a close watch and careful response decisions.Thin line between hope, false sense of securityAt a briefing today, Hans Henri Kluge, MD, MPH, said daily case numbers and deaths are still too high. "At this point, the overwhelming majority of European countries remain vulnerable," he said. "Right now, it’s a thin line between the hope of a vaccine and a false sense of security."As of now, only 1.5% of the population across 29 of 37 countries that are vaccinating have been immunized, and 17 countries in the region are