Coronavirus latest: Cases on the rise in 3 US states
The seven-day average for new cases in the United States has jumped by 13%.
A pandemic of the novel coronavirus has now killed more than 961,000 people worldwide.
Over 31.1 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The criteria for diagnosis -- through clinical means or a lab test -- has varied from country-to-country. Still, the actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some national governments are hiding or downplaying the scope of their outbreaks.
Since the first cases were detected in China in December, the virus has rapidly spread to every continent except Antarctica.
The United States is the worst-affected country, with more than 6.8 million diagnosed cases and at least 199,552 deaths.
California has the most cases of any U.S. state, with more than 786,000 people diagnosed, according to Johns Hopkins data. California is followed by Texas and Florida, with over 713,000 cases and over 683,000 cases, respectively.
Nearly 170 vaccine candidates for COVID-19 are being tracked by the World Health Organization, at least six of which are in crucial phase three trials.
Latest headlines:
California's death count surpasses 15,000
California's death toll from COVID-19 has surpassed 15,000, according to a real-time count kept by Johns Hopkins University.
The state's tally of coronavirus-related fatalities, which currently stands at 15,016, is the fourth-highest in the country, after New York, New Jersey and Texas.
California has reported the most COVID-19 infections of any U.S. state since the start of the pandemic, with more than 786,000 confirmed cases.
However, the state's infection rate has fallen to 3% in the past week, the lowest level since the early days of the pandemic, according to The Associated Press.
England introduces hefty fines for breaking self-quarantine
People in England who violate an order to self-quarantine will face fines of up to 10,000 British pounds, amid an alarming rise in COVID-19 infections.
British Prime Minister Boris Johnson said the new penalties mean people "are legally obliged" to self-isolate if they test positive for COVID-19 or are traced as a close contact to someone who did. The fines, which take effect next week, will start at 1,000 British pounds (approximately $1,300) but could increase to up to 10,000 pounds (about $13,000) for repeat offenders.
The higher fines could be applied to "the most egregious breaches," including those who prevent others from self-isolating, such as business owners who threaten employees with losing their jobs if they don't come into work.
Low-income workers who face a loss of earnings as a result of having to self-quarantine will be eligible for a one-time support payment of 500 British pounds (approximately $650).
The new fines will come into force in England on Sept. 28. Officials are in talks with the devolved governments of Northern Ireland, Scotland and Wales about expanding them U.K.-wide.
"The best way we can fight this virus is by everyone following the rules and self-isolating if they're at risk of passing on coronavirus," Johnson said while announcing the new rules over the weekend. "People who choose to ignore the rules will face significant fines. We need to do all we can to control the spread of this virus, to prevent the most vulnerable people from becoming infected, and to protect the NHS and save lives."
An official estimate shows that new COVID-19 infections and hospital admissions are doubling every seven to eight days in the United Kingdom. There were 3,899 new infections and 18 fatalities reported Sunday, bringing the country's tally to 394,257 cases and 41,777 deaths, according to the latest figures from the U.K. government
ABC News' Christine Theodorou contributed to this report.
US death toll from COVID-19 inches closer to 200,000
An additional 230 coronavirus-related fatalities were recorded in the United States on Sunday, as the country's death toll inches closer to the 200,000 mark, according to a real-time count kept by Johns Hopkins University.
Sunday's tally of COVID-19 deaths is well under the country's record set on April 17, when there were 2,666 new fatalities in a 24-hour reporting period.
There were also 38,978 new cases of COVID-19 confirmed across the nation on Sunday, down from a peak of 77,255 new cases reported on July 16.
A total of 6,805,630 people in the United States have been diagnosed with COVID-19 since the pandemic began, and at least 199,512 of them have died, according to Johns Hopkins. The cases include people from all 50 U.S. states, Washington, D.C. and other U.S. territories as well as repatriated citizens.
By May 20, all U.S. states had begun lifting stay-at-home orders and other restrictions put in place to curb the spread of the novel coronavirus. The day-to-day increase in the country's cases then hovered around 20,000 for a couple of weeks before shooting back up and crossing 70,000 for the first time in mid-July. The daily tally of new cases has gradually come down since then.
Week-over-week comparisons show that the number of new cases and the number of new deaths recorded in the United States are both decreasing, according to an internal memo from the Federal Emergency Management Agency obtained by ABC News last week.