April McGhee and her teenage daughter started feeling sick last month. They had coughs, sore throats and fevers. Her daughter's condition became so bad that they went to the emergency room.

"She had it worse than I did," McGhee said. "Her cough lasted longer. It was really a concern. ... It was like a dry, nonproductive, hacking cough."

McGhee, who lives in Sacramento, wanted both of them to get tested for the coronavirus. But the hospital told her they weren't sick enough to qualify for testing under California's rules. So, they went home and into isolation.

Updated at 5:00 a.m. ET on March 6

British Prime Minister Boris Johnson, who was diagnosed with the coronavirus last month, has been admitted to the hospital for testing on the advice of his doctor, his office said Sunday.

"This is a precautionary step, as the Prime Minister continues to have persistent symptoms of coronavirus 10 days after testing positive for the virus," a spokesperson said in a statement.

The Pentagon was aware of the likelihood of a pandemic brought on by a novel coronavirus years ago, predicting with startling accuracy shortages of masks, hospital beds and ventilators that could occur in an outbreak, according to a 2017 internal document reported by The Nation.

Former Vice President Joe Biden says the Democratic National Convention may need take place virtually as a result of the deepening coronavirus outbreak.

On Thursday the party delayed the presidential nominating convention from mid-July to mid-August over pandemic fears, but Biden on Sunday raised the specter of Democrats choosing their White House nominee online for the first time.

An association representing thousands of hospitals across the country is pushing back after President Trump claimed that hospital administrators are "really thrilled to be where they are."

The American Hospital Association said hospital officials are worried about shortages of critical medical supplies, including medication for patients and personal protective equipment, or PPE, for health care workers.

Updated at 3:39 p.m. ET

Queen Elizabeth II addressed the United Kingdom on Sunday in a rare speech, urging self-discipline and resolve in the midst of the coronavirus pandemic. The queen, 93, acknowledged the grief and financial pain that Britons are enduring while also thanking health workers for their service and ordinary people for staying home.

"Together we are tackling this disease and I want to reassure you that if we remain united and resolute, then we will overcome it," she said.

The United States remains the epicenter of the coronavirus pandemic, with confirmed cases now at more than 300,000 and deaths climbing toward 9,000.

In Europe, another global hot spot, Spain has surpassed Italy for the leading number of cases, with Germany and France not too far behind. Worldwide, there are over 1.2 million cases and nearly 66,000 deaths.