How Travel Restrictions Work

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One of the biggest lessons of the pandemic has been the success of travel restrictions at reducing its spread. And this is a moment when they have the potential to be particularly effective in the U.S., given the emergence of even more dangerous coronavirus variants in other countries.

President Biden seems to realize this, and has reinstated some travel restrictions that President Donald Trump lifted just before leaving office.

It’s not yet clear whether Biden will impose the kind of strict rules that have worked best elsewhere. So far, he has chosen a middle ground between Trump’s approach and the approaches with the best global track record.

Many of the places that have contained the virus have relied on travel restrictions. The list includes Australia, Ghana, New Zealand, South Korea, Taiwan, Vietnam and Canada’s four Atlantic provinces. At key points, they imposed severe restrictions on who could enter.

There is a crucial word in that sentence: severe. Travel bans work only when countries don’t allow a lot of exceptions.

Barring citizens of other countries while freely allowing your own citizens to return, for example, is ineffectual. “Viruses don’t care what passport you carry,” my colleague Donald G. McNeil Jr., who’s been covering infectious diseases since the 1990s, told me.

Voluntary quarantines generally don’t work either, since many people don’t adhere to them. Some take mild precautions and still describe themselves as “quarantining.” As Donald says: “For it to work, it has to be mandatory — and actually enforced. And not at home.”

Australia crushed the spread of the virus in the spring partly by ending its voluntary quarantine and requiring all arrivals, including Australian citizens, to spend two weeks in a hotel. The military then helped enforce the rules. China and some other Asian countries took similar steps. In eastern Canada, tough entry rules were “one of the most successful things we’ve done,” Dr. Susan Kirkland, a Nova Scotia official, has said.

Travel bans had such a big effect, Dr. Jared Baeten, a prominent epidemiologist, told me last year, that public-health experts should re-examine their longtime skepticism of them. “Travel,” he said, “is the hallmark of the spread of this virus around the world.”

Last year, the U.S. became a case study in the ineffectiveness of limited travel rules after Trump announced a ban on entry from China. Because it didn’t apply to U.S. citizens or their immediate family members, among others, and because Trump did little to restrict entry from Europe, the measures had little effect.

Infectious variants of the virus that are spreading in Brazil and South Africa could be even more dangerous than a strong new variant found in Britain, scientists say. In response, Biden is restricting entry from Europe, Brazil and South Africa, but the policy has multiple exceptions: Americans can return home from these places if they have recently tested negative, even though the test result may not be current.

The politics of travel bans are certainly thorny. Businesses worry about the economic impact (as The New Yorker’s Lawrence Wright noted in a fascinating radio interview with Terry Gross). Progressives worry about stoking anti-immigration views. And it’s already too late to keep the variants out of the U.S. entirely.

Yet travel restrictions can still save lives. The U.S. is in a race to vaccinate as many people as possible before they contract the virus, and the new variants are the biggest new challenge in doing so. “I am worried about these variants,” Dr. Vivek Murthy, the co-chair of Biden’s virus task force, said on the first episode of Ezra Klein’s Times podcast.

The U.S. travel restrictions will almost certainly have some impact by keeping out some infected people. But Biden’s policy stops short of minimizing the virus’s spread.

This year is the 125th anniversary of the The New York Times Book Review. It started in 1896, originally called “Saturday Review of Books and Art.” The first issue — eight pages — included an article about Oscar Wilde’s experience in prison and another about department stores posing a threat to independent booksellers.

Most reviewers in the early days were anonymous and simply summarized the books. “There wasn’t as much opining,” said Tina Jordan, an editor whose new book about the Book Review’s history is due out in October. “There were exceptions, of course; a handful of books got absolutely demolished in our pages.” Some headlines: “Worthless Edition of a Poor Anthology,” “Two Pathetic Novels,” “Sundry Novels: Some Worth Reading and Others Not Worth the Printing.”

Earlier versions of the section were also less strict about conflicts of interest. “In the 1950s, James Baldwin and Langston Hughes reviewed each other,” a practice of mutual reviews that is no longer allowed, said Pamela Paul, the editor of the Book Review. “Neither was especially kind,” she said, although they also appreciated each other’s talents.

You’ll find 25 old reviews by notable figures here. They include Bill Gates, John F. Kennedy, Vladimir Nabokov, Toni Morrison, Patti Smith and Eudora Welty — who worked briefly as an editor at the Book Review during World War II.

The pangram from yesterday’s Spelling Bee was armadillo. Today’s puzzle is above — or you can play online if you have a Games subscription.

Here’s today’s Mini Crossword, and a clue: Kick back and relax (five letters).

Thanks for spending part of your morning with The Times. See you tomorrow. — David

P.S. A hidden haiku in Bill Gates’s Times review of Yuval Noah Harari’s book: “What will give our lives / meaning in the decades and / centuries ahead?”

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Scoop Sky is a blog with all the enjoyable information on many subjects, including fitness and health, technology, fashion, entertainment, dating and relationships, beauty and make-up, sports and many more.

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