A version of this story appeared in the September 28 edition of CNN’s Coronavirus: Fact vs. Fiction newsletter. Sign up here to receive the need-to-know headlines every weekday.

(CNN)Nearly 1 million people across the world have died since the start of the coronavirus pandemic and new outbreaks are continuing to crop up.

The World Health Organization has warned that a doubling of that number is “certainly unimaginable, but it’s not impossible,” if countries don’t work together to suppress the virus’ spread. In the United States, India and Brazil — which account for more than half of all global cases — the pandemic shows no sign of slowing down.The US, which surpassed 7 million cases on Friday, could see an explosion in Covid-19 infections as fall and winter set in, health experts warn. India, which hit 6 million cases on Monday, isn’t far behind — the country has recorded 5 million infections in the past two months alone. And the pandemic continues to roil South America. Though Brazil is the region’s worst-affected nation, with more than 4.7 million infections, Argentina, Colombia and Peru are recording thousands of new cases daily.Several countries in Europe are also seeing an increasing trend in case numbers, after lockdown policies were lifted over the summer, contributing to a new surge. Second waves are underway in the United Kingdom, Spain and France.Read MoreYOU ASKED. WE ANSWEREDQ: What is aerosolized spread? What’s the difference between aerosols and droplets?A: Aerosolized spread is the potential for the coronavirus to be passed not just by respiratory droplets, but by even smaller particles called aerosols.Unlike droplets, respiratory aerosols linger in the air long after someone talks, breathes, sings, sneezes or coughs, and can spread farther than 6 feet. This becomes “very relevant” when you are indoors and there is poor ventilation, Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said. “There’s good enough data to say that aerosol transmission [of coronavirus] does occur,” Fauci said, adding that there’s an easy way to help minimize the risk: “Wear the mask.” Send your questions here. Are you a health care worker fighting Covid-19? Message us on WhatsApp about the challenges you’re facing: +1 347-322-0415. WHAT’S IMPORTANT TODAYNew York City’s spike in cases shows coronavirus is still ‘a force to be reckoned with’As cases spike in parts of New York City, Gov. Andrew Cuomo warned that Covid-19 “remains a force to be reckoned with throughout the country.” Once the epicenter of the pandemic in the US, New York had boasted a test positivity rate — the percentage of tests that come back positive for the virus — of less than 1% for more than a month. That rate broke 1% on Saturday as Cuomo reminded New Yorkers “we cannot drop our guard.”Experts have cautioned that the US could see an explosion of coronavirus cases in the fall and winter as people exercise less caution and spend more time indoors. Already, 21 states are reporting more new cases in the last seven days compared with the week before, according to a CNN analysis of data from Johns Hopkins University.Some countries are eying Sweden’s ‘light-touch’ Covid response. It’s a gamble that could backfireAn expert on the spread of Covid-19 proclaimed last week that the pandemic in Sweden was essentially over — the virus there was “running out of steam,” he said, as researchers suggest Swedes could be building immunity.Such comments have emboldened governments flirting with the idea of adopting Sweden’s “light-touch” approach, in the hope they can soften the blow to their economies.The problem is, the science isn’t in on whether immunity is building in Sweden at all, after the country resisted lockdowns and let the virus spread through much of its population, Angela Dewan writes. Monthslong curfew lifted in Australia, as other countries lock down Five million residents in Melbourne, Australia, emerged from a long lockdown on Monday, with stringent restrictions loosening after nearly two months as the state continues to see a drop in coronavirus cases. Victoria state’s Premier Daniel Andrews announced late Sunday night that the city would enter “the second step toward reopening,” which included lifting a nightly curfew. Elsewhere, restrictions are being reinforced as cases surge. In Israel, which now has one of the highest rates of infection per capita, a second lockdown was tightened over the weekend to include limitations on workplaces and prayer gatherings. In Madrid, protesters took to the streets to demand that a partial lockdown be lifted. And the UK government has been enforcing lockdowns across northern England — London may be next. ON OUR RADAROne-third of American parents have no plans to get their children vaccinated for the flu this year, a study has found, despite the very real risk they could also catch Covid-19. A Maryland man has been sentenced to a year in jail for holding two large parties and violating the state’s order against large gatherings. Florida’s bars and restaurants are fully open again. But Miami’s mayor is worried. Coronavirus admissions at intensive care units in the Provence-Alpes Côte d’Azur region of southern France have tripled since the beginning of September, according to official statistics. Beijing on Monday asked frozen food importers to avoid importing goods from coronavirus hotspots, based on evidence that cold chain foods are at risk of contamination. The upcoming G20 Leaders’ Summit, which was scheduled to be held in Riyadh, Saudi Arabia, will now be held virtually on November 21-22. TODAY’S TOP TIPParents worried about the long-term impact of the Covid-19 crisis on their children may be surprised to hear what psychotherapist and trauma reprocessing specialist Sara Waters recommends for protecting our kids.It turns out that parents play a bigger role in how things turn out than we might have thought. In most cases, parents “have more influence on the resilience, confidence and assuredness of our children’s psychological wellness during this time than any other variable.”Because of mirror neurons — which fire off in response to emotions, facial expressions and body language — our children’s experiences of the world will reflect our own. So, what’s a stressed-out parent to do? Waters shared some ideas. TODAY’S PODCAST”It was very surreal here and not in that kind of fascinating, mystical way. Really in like a horrifying way.” — Kim Toevs, director of communicable disease for Multnomah County, OregonLocal governments may be more prepared to respond to natural disasters thanks to their coordination on Covid-19. CNN’s Chief Medical Correspondent Dr. Sanjay Gupta talks to Toevs about how public health and emergency management worked faster than usual in Oregon to contain the fires and the virus. Listen Now.

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