Latin America surged past the US and Canada to become the world's second worst-hit region for virus deaths on Monday as a Spanish court blocked a move to lock down some 200,000 people.

South Africa meanwhile reimposed a nationwide curfew to prevent a "coronavirus storm" from ravaging the continent's hardest-hit nation.

Since the start of July, nearly 2.5 million new infections have been detected across the globe, with the number of cases doubling over the past six weeks, according to an AFP tally based on official figures. And with cases surging in Latin America, the continent on Monday had officially declared a total of 144,758 deaths, passing the 144,023 recorded in the United States and Canada.

It now stands second only to Europe, where 202,505 people have died. Although life in parts of Europe has been returning to some semblance of normality, authorities across the continent are worriedly watching dozens of areas where cases have resurged.

Concerned by a spike in the town of Lerida in Spain's northeastern Catalonia region, officials on Sunday ordered nearly 200,000 residents to stay home in the first such order since the country's lockdown ended on June 21.

But early Monday, a local court suspended the measure as "contrary to law" despite concerns over the scale of the outbreak -- one of scores being monitored across badly-hit Spain, where the virus has killed more than 28,400 people. Fears of a second wave also forced South Africa to re-impose a nationwide curfew on Sunday, with President Cyril Ramaphosa warning the country faced a "coronavirus storm" that was "far fiercer and more destructive" than any before.

With new infections topping 12,000 per day -- or 500 per hour -- South Africa has reimposed a night curfew as well as a ban on alcohol sales that was lifted barely six weeks ago. The Philippines also moved to reimpose a two-week lockdown on some 250,000 people in Manila as new infections soared just six weeks after the capital emerged from one of the world's longest lockdowns.

Spike on US bases in Japan

Meanwhile in Japan, two US Marine bases on Okinawa island have been locked down after a spike in cases with dozens infected and local officials expressing "serious doubts" about the US military's containment efforts.

Other restrictions were imposed on seven other Marine bases on the southern Japanese island where tens of thousands of US servicemen are stationed and where nearly 100 new cases have been detected in recent days. The move came after a weekend in which US President Donald Trump wore a face mask in public for the first time, as he visited veterans at a hospital near Washington.

The worst-hit country in the world, the US has suffered 135,171 deaths and 3,301,820 cases, with surveys showing Americans are unhappy with how Trump has handled the crisis. Across the planet, the pandemic has infected nearly 13 million people, killed over 566,000 and triggered massive economic damage in the seven months since it was detected in the Chinese city of Wuhan.

In Latin America, Brazil accounts for almost half of the continent's recorded fatalities. Mexico has become the country with the fourth-highest number of COVID-19 fatalities in the world, climbing to a total of 35,006 deaths and surpassing Italy.

And Sri Lanka ordered government schools across the nation to shut Monday -- just a week after they reopened -- following a surge in new cases. The latest high-profile personality to test positive for COVID-19 was Bollywood superstar and former Miss World Aishwarya Rai.

'Tax us more': millionaires

With the global economy battered by the pandemic, more than 80 millionaires on Monday urged governments around the world to hike taxes on the super-wealthy to help fund the recovery.

In an open letter, "Millionaires for Humanity" said they should be taxed higher, "immediately, substantially, permanently".

"As COVID-19 strikes the world, millionaires like us have a critical role to play in healing our world," wrote the signatories, among them Ben and Jerry's ice cream co-founder Jerry Greenfield and screenwriter Richard Curtis. "No, we are not the ones caring for the sick in intensive care wards, we are not driving the ambulances. But we do have money, lots of it. Money that is desperately needed now and will continue to be needed in the years ahead, as our world recovers from this crisis."

Meanwhile reclusive Turkmenistan, one of a handful of countries yet to declare a single coronavirus case, on Monday suggested residents wear masks as a precaution against "dust". The health ministry said the call was due to "high concentrations of dust" in the air and also asked residents to maintain social distancing of at least one metre (three feet), but gave no explanation as to why.