“Among those, more than 3 million Americans have tested positive and more than 1.3 million Americans have recovered.”

Trump embarked on a morning tweet storm ahead of a public meeting of his coronavirus task force, in which he called for students to return to their schools in fall and lashed out at his own top health agency, the Centres for Disease Control and Prevention (CDC).

“In Germany, Denmark, Norway, Sweden and many other countries, SCHOOLS ARE OPEN WITH NO PROBLEMS,” he said.

“The Dems think it would be bad for them politically if U.S. schools open before the November Election, but is important for the children & families. May cut off funding if not open!”

He added that he disagreed with guidance for reopening schools set out by the CDC and would be “meeting with them!!!”

The agency’s head later said the guidelines were “not requirements” and that the CDC would soon update its advice.

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US surpasses 3 million coronavirus cases, as White House pushes to reopen schools

US surpasses 3 million coronavirus cases, as White House pushes to reopen schools

In New York, Mayor Bill de Blasio said most public schools would be ready to partially reopen in September, with most students to spend two or three days a week in classrooms. The proposal needs to be approved by Governor Andrew Cuomo, who said he would make a decision in early August.

Sending children back to school is vital if parents are to return to manufacturing and other jobs that require their physical presence.

All of the countries mentioned by Trump have far smaller epidemics than the United States, while Sweden is viewed by many public health experts as a cautionary tale after shunning lockdowns and experiencing a high death rate.

America is by far the hardest-hit country in the world, with nearly 132,000 deaths – even as the fatality rate has fallen from highs seen during the late spring peak.

In April and May, as many as 3,000 people were dying each day, while for the past few days it has been around 600.

Experts see several reasons for this fall. These include far greater levels of testing picking up more mild cases, a younger population becoming infected, better treatments – and the lag time between infection and death among the sickest patients.

In terms of treatments, doctors have learned that placing patients with severe breathing problems on their stomachs, known as the “prone” position, can ease the burden on their lungs.

They are also using blood thinners preventively to avoid life-threatening clots in the lungs, brain, and limbs; and using steroids like dexamethasone to reduce an abnormal autoimmune response that ravages the organs.

Trump formally pulling US out of WHO over ‘China puppet’ claims

The antiviral remdesivir meanwhile has been shown to reduce the duration of hospital stays, but has not so far been proven to have a significant impact on mortality.

The US epidemic has also become far younger, with the median age for new cases in Florida fluctuating in the mid-30s, for example. In the greater Phoenix area, the major centre of the contagion in Arizona, half are under the age of 35.

These young people could in turn go on to infect the elderly or medically vulnerable, which would once more increase the death rate.

The US Department of Health has embarked on a surge testing campaign in several sites in the south to better track mild or asymptomatic cases.