Natural immunity to Covid-19 could decline within months, study suggests


A person walks by a closed liquor shop in the Hillbrow neighborhood of Johannesburg, South Africa, on July 13.
A person walks by a closed liquor shop in the Hillbrow neighborhood of Johannesburg, South Africa, on July 13. Michele Spatari/AFP/Getty Images

The World Health Organization (WHO) reported the highest daily number of Covid-19 cases globally on Sunday, with 230,370 new infections. 

In the US, where the virus is raging across parts of the country, nearly one out of every 100 Americans have tested positive for Covid-19.

The US has recorded more than 3.3 million coronavirus cases since the pandemic began, according to Johns Hopkins University, and at least 135,205 Americans have died.

In Florida, where there’s no statewide mask mandate, health officials on Sunday reported a staggering record of new cases in a single day: 15,300 — the highest number of new cases reported in a single day by any US state since the coronavirus pandemic began.

Across the world, 12.9 million people have tested positive for the virus, according to figures from Johns Hopkins.

Here’s the latest on the pandemic:

WHO advance team arrives in China to investigate origins of coronavirus: Two experts from the World Health Organization have arrived in Beijing to work with their Chinese counterparts on tracing the origin of Covid-19, China’s Ministry of Foreign Affairs (MOFA) confirmed Monday. The visit comes at a time of fraught political tensions between the US, China and the WHO — the WHO has been under fire for its relationship with China, and the US, under President Donald Trump, is withdrawing from the WHO.

South Africa suspends alcohol sales, enforces curfew, amid surge in cases: South Africa will resume a ban on alcohol sales and reinstate a daily curfew from 9pm until 4am, to free up hospital capacity as the country’s Covid-19 cases continue to rise.

Spanish judge blocks Catalonia from confining 156,000 people to their homes: A  judge has blocked the Catalan regional government’s home confinement order, designed to contain the spread of Covid-19 in the provincial capital of Lleida and 7 nearby towns. The measure would have left 156,000 people unable to leave their homes, with few exceptions, after Segría county tallied 1,438 new cases of Covid-19. A ruling late Sunday found that the confinement came under state jurisdiction, not that of the regional government.

UK PM Johnson encourages use of face coverings in confined spaces: UK Prime Minister Boris Johnson said people should wear face coverings inside shops, adding that the government would outline how it planned to enforce its advice over the next few days. 

Bollywood stars test positive: Coronavirus has hit one of Bollywood’s leading families with superstar Amitabh Bachchan, his son Abhishek Bachchan and daughter-in-law, actress Aishwarya Rai Bachchan all admitted to hospital. Authorities in Mumbai have declared Bollywood star Amitabh Bachchan’s Jalsa residence a containment zone, after the actor and other family members tested positive for coronavirus. 

Lebanon records highest daily increase in coronavirus cases: Lebanon has seen a surge in coronavirus cases, less than two weeks after it virtually ended its lockdown. Early in the pandemic, the eastern Mediterranean country took aggressive measures to stem the spread of the virus, but less than two weeks after Beirut’s international airport reopened, infections have risen rapidly. Yesterday, Lebanon reported 166 new cases — a record high for the country.


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