We are living in a time of bad metaphors. Everything is fascism, or socialism; Hitler’s Germany, or Stalin’s Soviet Union. Republicans, especially, want their followers to believe that America is on the verge of a dramatic time, a moment of great conflict such as 1968—or perhaps, even worse, 1860. (The drama is the point, of course. No one ever says, “We’re living through 1955.”)

Ironically, the GOP is indeed replicating another political party in another time, but not as the heroes they imagine themselves to be. The Republican Party has become, in form if not in content, the Communist Party of the Soviet Union of the late 1970s.

I can already hear the howls about invidious comparisons. I do not mean that modern American Republicans are communists. Rather, I mean that the Republicans have entered their own kind of end-stage Bolshevism, as members of a party that is now exhausted by its failures, cynical about its own ideology, authoritarian by reflex, controlled as a personality cult by a failing old man, and looking for new adventures to rejuvenate its fortunes.

The past 11 months have been a crash course in a million concepts that you probably wish you knew a whole lot less about. Particle filtration. Ventilation. Epidemiological variables. And, perhaps above all else, interdependence. In forming quarantine bubbles, in donning protective gear just to buy groceries, in boiling our days down to only our most essential interactions, people around the world have been shown exactly how linked their lives and health are. Now, as COVID-19 vaccines rewrite the rules of pandemic life once more, we are due for a new lesson in how each person’s well-being is inextricably tangled with others’.

This odd (and hopefully brief) chapter in which some Americans are fully vaccinated, but not enough of us to shield the wider population against the coronavirus’s spread, brings with it a whole new set of practical and ethical questions. If I’m vaccinated, can I travel freely? Can two vaccinated people from different households eat lunch together? If your parents are vaccinated but you’re not, can you see them inside? What if only one of them got both shots? What if one of them is a nurse on a COVID-19 ward?

It’s no exaggeration to say that one of the biggest artists in American music right now is a disgrace. Three weeks after the 27-year-old country singer Morgan Wallen said a racial slur on camera, his second studio album, Dangerous: The Double Album, is at No. 1 on the Billboard 200 chart. His singles have been bobbing in the country-music top 10 and the cross-genre Hot 100. Billboard’s ranking of the most popular artists in the United States had him in the top spot for five straight weeks. Thousands of people are, at this moment, streaming Wallen’s songs, buying his records, and watching his music videos—putting money in the pockets of someone who has admitted to saying one of the most noxious things imaginable.

The hypothetical couple were making $350,000 a year and just getting by, their income “barely” qualifying them as middle-class. Their budget, posted in September, showed how they “survived” in a city like San Francisco, spending more than $50,000 a year on child care and preschool, nearly $50,000 a year on their mortgage, and hefty amounts on vacations, entertainment, and a weekly date night—even as they saved for retirement and college in tax-advantaged accounts.

The internet, being the internet, responded with some combination of howling, baying, pitchfork-jostling, and scoffing. Representative Alexandria Ocasio-Cortez of New York quipped that the thing the family was struggling with was math. Gabriel Zucman, a leading scholar of wealth and inequality, described the budget as laughable, while noting that it showed how much money consumption taxes could raise.

A few years ago, when I still had confidence in our modern ability to fight viruses, I pored over a photo essay of the 1918 flu pandemic. How quaint, I remember thinking, as I looked at people bundled up for outdoor classes and court and church. How primitive their technology, those nurses in gauze masks. How little did I know.

I felt secure, foolishly, in our 100 additional years of innovation. But it would soon become clear that our full-body hazmat suits and negative-pressure rooms and HEPA filters mattered little to Americans who couldn’t find N95 masks. In our quest for perfect solutions, we’d forgotten an extremely obvious and simple one: fresh air. A colleague joked, at one point, that things would have gone better in the pandemic if we still believed in miasma theory.

In 1995, if you had told Toby Spribille that he’d eventually overthrow a scientific idea that’s been the stuff of textbooks for 150 years, he would have laughed at you. Back then, his life seemed constrained to a very different path. He was raised in a Montana trailer park, and homeschooled by what he now describes as a “fundamentalist cult.” At a young age, he fell in love with science, but had no way of feeding that love. He longed to break away from his roots and get a proper education.

At 19, he got a job at a local forestry service. Within a few years, he had earned enough to leave home. His meager savings and nonexistent grades meant that no American university would take him, so Spribille looked to Europe.

On its face, reinfection appears to be a straightforward term. It is literally “infection, again”—a recovered person’s second dalliance with the same microbe. Long written into the scientific literature of infectious disease, it is a familiar word, innocuous enough: a microbial echo, an immunological encore act.

But thanks to the pandemic, reinfection has become a semantic and scientific mess.

Newly saddled with the baggage of COVID-19, reinfection has taken on a more terrifying aspect, raising the specter of never-ending cycles of disease. It has sat at the center of debates over testing, immunity, and vaccines; its meaning muddled by ominous headlines, it has become wildly misunderstood. When I ask immunologists about reinfection in the context of the coronavirus, many sigh.

Updated at 10:12 a.m. ET on February 24, 2021.

The end of the coronavirus pandemic is on the horizon at last, but the timeline for actually getting there feels like it shifts daily, with updates about viral variants, vaccine logistics, and other important variables seeming to push back the finish line or scoot it forward. When will we be able to finally live our lives again?

Pandemics are hard to predict accurately, but we have enough information to make some confident guesses. A useful way to think about what’s ahead is to go season by season. In short: Life this spring will not be substantially different from the past year; summer could, miraculously, be close to normal; and next fall and winter could bring either continued improvement or a moderate backslide, followed by a near-certain return to something like pre-pandemic life.

At about 2 a.m. on Thursday morning, I woke to find my husband shivering beside me. For hours, he had been tossing in bed, exhausted but unable to sleep, nursing chills, a fever, and an agonizingly sore left arm. His teeth chattered. His forehead was freckled with sweat. And as I lay next to him, cinching blanket after blanket around his arms, I felt an immense sense of relief. All this misery was a sign that the immune cells in his body had been riled up by the second shot of a COVID-19 vaccine, and were well on their way to guarding him from future disease.

Side effects are a natural part of the vaccination process, as my colleague Sarah Zhang has written. Not everyone will experience them. But the two COVID-19 vaccines cleared for emergency use in the United States, made by Pfizer/BioNTech and Moderna, already have reputations for raising the hackles of the immune system: In both companies’ clinical trials, at least a third of the volunteers ended up with symptoms such as headaches and fatigue; fevers like my husband’s were less common.

Former President Donald Trump faces various legal and political challenges, but few seem to have gotten him as agitated as a routine, expected, unsigned decision by the Supreme Court on Monday.

Trump had already lost a bid to prevent Manhattan District Attorney Cy Vance Jr. from acquiring his financial records via subpoena. The former president then sought a stay while he searched for other means to stall. As anticipated, the justices rejected the request. Trump then issued one of just a handful of public statements he’s issued since leaving office, blasting “the Continuing Political Persecution of President Donald J. Trump.”

His vehemence is part of a long-running pattern: Trump dislikes all investigations, but nothing rattles him like probes into his finances. (When he tried to fire Special Counsel Robert Mueller, it was because of a report that Mueller had subpoenaed his financial records.) We can guess at the reasons. First, Trump is extremely defensive about anything that might imply he is not as rich as he claims. Second, there is much to suggest that Trump might have committed financial crimes.