The United States recorded more than one million new Covid-19 cases last week as new infections rose in every state except for Hawaii, according to a Reuters analysis of state and county reports.

Deaths increased 12 per cent in the week ending Nov 15 and averaged more than 1,100 people per day.

Several states, including Michigan, North Dakota and Washington, imposed new restrictions on public gatherings and indoor dining to try to slow the spread of the virus.

Some of the states that saw the sharpest percentage increases in infections last week, such as Vermont, New Hampshire, New Jersey and New York, were places that appeared to have had the virus under control over the summer.