GENEVA — The European head for the World Health Organization is warning of “alarming rates of transmission” of the coronavirus in parts of the continent.

Dr. Hans Kluge says the largest proportion remains among adults ages 25 to 49 but noted increases in cases in older age groups, who tend to be more vulnerable to severe the deadly disease.

“This pandemic has taken so much from us in Europe: 4,893,614 cases of COVID-19 have been recorded and 226,524 deaths, and that tells only part of the story.

He also pointed to a “monumental” impact on mental health, economies, and livelihoods.

“Although these numbers reflect more comprehensive testing, it also shows alarming rates of transmission across the region,” he said.

He called for “regional coherence” and says Europe’s response has been effective when “prompt and resolute. But the virus has shown (to be) merciless whenever partisanship and disinformation prevailed.”