COVID-19 | The United States lost 15,000 people to Covid-19 last week, the deadliest seven days since April, and health officials warned that the worst is yet to come as the country's death toll nears 300,000.

The number of new coronavirus cases rose 19 percent to 1.4 million in the week ended Dec 6, after falling the previous week as many testing centres were closed for the Thanksgiving holiday, according to a Reuters analysis of state and county reports.

Rhode Island and Indiana had the highest number of cases per capita, with more than 700 people diagnosed for every 100,000 residents...