In the U.S., enthusiasm on the right is building for so-called herd immunity, as the public grows skeptical of coronavirus vaccines. These developments could dash hopes for containing Covid-19 in the months ahead.

Proponents of herd immunity say exposing more people to the coronavirus will build protection broadly in the population. But experts say that will result in many more illnesses and deaths, and that vaccines are a safer route to herd immunity. Emma Court reports that the concept gained traction in the White House, due to the increasing influence of Trump medical advisor Scott Atlas. It was backed this month by a group of academics in a treatise titled the Great Barrington Declaration.

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Millions of Europeans are facing tighter restrictions on their movements, with London, Paris, and Vienna enforcing stricter curbs. On Monday, the government of Wales announced a two-week “fire-break” lockdown designed to curb the spread of coronavirus. All non-essential retail outlets, including pubs and restaurants, will be closed from October 23rd to November 9th. Bloomberg reporter Catherine Bosley reports how Europe is hoping to control this new wave of coronavirus infections and whether another round of restrictions and lockdowns can offset the economic devastation in the region the pandemic has already caused.

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The Los Angeles Lakers took home the NBA championship this week. But the close of the season also marked a big victory for the league itself. The NBA played its finals in a unique environment that came to be known as the bubble. Players were frequently tested and social distancing was heavily enforced. And, the experiment worked. The NBA did not report a single positive coronavirus case from players or staff. Reporters Emma Court and Brandon Kochkodin describe how the league did it, and whether other organizations can replicate its success.

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States are racing the clock to meet a Friday deadline from the Federal government to submit their plans to distribute a vaccine, once an effective one is ready. But Angelica Lavito reports that they’re putting together their strategies effectively blindfolded. State health officials have no clue which vaccine they will be distributing, nor when — or even if — a vaccine will be forthcoming.

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President Donald Trump returned to the campaign trail today a little over a week after testing positive for the coronavirus. His campaign hopes to reverse polling trends that show him falling further behind Democratic nominee Joe Biden. But as the president prepares to address supporters amid record U.S. deaths from the pandemic, the virus stays with him, both literally and figuratively. Michelle Fay Cortez reports that Trump’s handling of his own infection, and the cluster of infections at the White House, is a microcosm of the country’s pandemic response.

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Obesity is a known risk factor for severe complications of Covid-19. But scientists are learning that the link between extra pounds and severe Covid-19 may be even stronger than they thought. This week, the U.S. Centers for Disease Control and Prevention said that people who are merely overweight, not just the obese, may be at high risk of serious disease from the infection. Emma Court reports that the warning means about two-thirds of Americans could face higher risks.

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The U.S. Food and Drug Administration has been working for months to hammer out clear standards for vaccines seeking fast-track approval. Yesterday, The agency made a series of moves that all but assured that a shot won’t be widely available by Election Day. Senior editor for Health Care Drew Armstrong explains what that means for a fast vaccine, and for Trump’s re-election.

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Dozens of companies are rushing to test and produce a Covid-19 vaccine as fast as possible. But a fringe group of DIY scientists made a bet that without regulatory hurdles, they could produce a vaccine themselves a whole lot faster. But as Kristen V. Brown reports, they learned that making a vaccine that works reliably--and can be proven safe--is incredibly difficult.

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President Donald Trump’s diagnosis of coronavirus has raised questions about everything from the Supreme Court nominating process to the possibility of future presidential debates. And of course, the unprecedented possibility of a candidate being removed from the ticket this late in an election year. Drew Armstrong and Michelle Fay Cortez discuss what we know, and still don’t, about what happens next.

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New York City was hit hardest in the early months of the pandemic in the U.S. But after a strict lockdown, the city has enjoyed months of some of the lowest case rates in the country. But as schools reopen and the weather gets cooler, cases have begun to rise. The rate of positive cases exceeded 3 percent for the first time in months, and the mayor is considering shutting select schools and businesses in the ZIP codes driving the increase. Drew Armstrong describes the citry's efforts to recover from the outbreak’s devastating toll, and to safely repair its wounded economy.

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