(CNN)In the latest sign that the coronavirus pandemic is far from under control, Sunday ushered in a global record for new infections, with more than 230,000 cases reported in a 24-hour period by the World Health Organization.
As second and third waves begin to emerge in countries that have eased up restrictions, and the WHO confirms evidence of airborne transmission, the political and cultural war on face coverings is still raging.
The three countries at the top of the pandemic chart -- the United States, Brazil and the UK -- are those in which people still resist wearing masks. Mask wearing has, up until last week, largely been shunned and even ridiculed by the leaders of the worst-hit countries -- the US and Brazil.
But the science is clear. Taiwan, South Korea and mainland China, all places with widespread mask use, have seen greater success in preventing major outbreaks or reining them in once they begin. And new research shows that masks can help cut down on one of the main drivers of cases: "silent spreaders," or people who are asymptomatic or presymptomatic.
YOU ASKED. WE ANSWERED
Q: If you take the Covid-19 test on Friday, will those results still be accurate on Monday?
A: It depends on the type of test you take, CNN's Chief Medical Correspondent Dr. Sanjay Gupta says. There are two:
- A viral test -- which can be taken by a swab of your throat or nose, as well as via a saliva sample -- will tell you whether you are currently infected with Covid-19. So, if you took the test on a Friday and the results came back negative, it means that you were Covid-19 free on Friday. But anything can happen after that. According to the CDC, someone infected with Covid-19 could test negative initially one day and then test positive later as the infection develops.
- An antibody test uses a blood sample. It may take a few weeks for your body to produce antibodies after a Covid-19 infection. So if you test positive, it means that you had Covid-19 in the past and you probably have some immunity to it. But we still don't know how long those antibodies -- or immunity -- last.
Neither of the tests are 100% accurate. There could be false positives and false negatives. No matter the result, we have to be careful in protecting ourselves and others from getting the virus by wearing a mask, and by physical distancing.
WHAT'S IMPORTANT TODAY
Florida's virus record exemplifies disaster of early openings
The Sunshine State recorded more than 15,000 new infections on Sunday -- the highest number of new cases in a single day by any state -- and has run out of ICU beds in 40 hospitals, as the pandemic rages across southern and western heartlands including Texas, Georgia and Arizona. The surge came two months after many states, disregarding government guidelines, opened up bars, gyms, hair salons and other businesses.
Florida Rep. Donna Shalala, a freshman Democrat and former secretary of Health and Human Services under President Bill Clinton, said the virus was out of control partly because the governor, a Trump ally, would not tell everyone to wear masks and telling CNN: "this is an American tragedy".
White House takes aim at Fauci
The move to treat Fauci -- who has been a trusted voice on the crisis in America -- as a political opponent by the White House comes as Trump and the epidemiologist are not on speaking terms. The tension between the two men has grown publicly as the two have responded to one another through interviews and statements.
Bollywood reels as top stars test positive
Superstar Amitabh Bachchan -- whose face is plastered across the country -- his son Abhishek Bachchan and daughter-in-law, actress Aishwarya Rai Bachchan, have all been admitted to hospital following positive tests.
There are hopes that their hospitalization will encourage Indians to get tested. India has so far carried out fewer coronavirus tests per capita than many other countries.
The pandemic pressed pause on overtourism. Now Asia is rethinking the industry
Before the pandemic put a stop to most international travel, each year millions of people flocked to Southeast Asia's white sandy beaches, ancient temples and diverse wildlife. In some places the crowds became so intense it caused locals, environmentalists and even governments to complain that overtourism was pushing the region's fragile ecosystems to breaking point.
But experts say the global pause on tourism has offered countries an unprecedented opportunity to examine how to rebuild their tourism industries in a way that benefits their economies and also protects the planet.
ON OUR RADAR
How do you explain to children that the challenges of pandemic life -- from missed social events to physical distancing -- aren't likely to end soon? It's a question many parents are grappling with, as Covid-19 shows no signs of abating.
But while the virus is unlike anything the world has faced in living memory, previous generations of children and youth have lived, grown and even thrived through great hardship. Their stories can be models of resilience, said children's book author and librarian Glenda Armand.
"Think of it like a spray bottle versus an aerosol can." -- CNN's Chief Medical Correspondent Dr. Sanjay Gupta