So far, most young Covid-19 patients have experienced mild or no symptoms from the virus, while more severe cases are concentrated among those aged 50 and over. Data released last week by the National Health Institute in Italy, currently the world’s worst-hit country, shows mortality rates starting at 0% for patients aged 0 to 29 and edging up to peak at 19% for those over 90.

Yet scientists say tests have shown children and young adults are no less likely than older people to get infected and transmit the virus. Epidemiologists are growing concerned that the millennial pushback against social-distancing measures—and an emerging generational divide about how the disease is perceived—could undo all efforts to slow the spread of the virus and put vulnerable people at high risk…

Across Europe, where social life is shutting down faster than in the U.S., a divide is spreading between the young, many of whom say they don’t fear the virus, and their elders, including politicians and scientists, whose alarm about the illness is growing by the day.

In Berlin, a European clubbing hot spot, authorities ordered the closure of all bars and clubs on Saturday. Yet many establishments ignored the decree, forcing police to forcibly shut down some 63 establishments across the city.