The COVID vaccines are, without exaggeration, among the safest and most effective therapies in all of modern medicine. An unvaccinated adult is an astonishing 68 times more likely to die from COVID than a boosted one. Yet widespread vaccine hesitancy in the United States has caused more than 163,000 preventable deaths and counting. Because too few people are vaccinated, COVID surges still overwhelm hospitals—interfering with routine medical services and leading to thousands of lives lost from other conditions. If everyone who is eligible were triply vaccinated, our health-care system would be functioning normally again. (We do have other methods of protection—antiviral pills and monoclonal antibodies—but these remain in short supply and often fail to make their way to the highest-risk patients.) Countries such as Denmark and Sweden have already declared themselves broken up with COVID. They are confidently doing so not because the virus is no longer circulating or because they’ve achieved mythical herd immunity from natural infection; they’ve simply inoculated enough people…

The same arguments apply to tobacco: Smokers are 15 to 30 times more likely to develop lung cancer. Quitting the habit is akin to receiving a staggeringly powerful medicine, one that wipes out most of this excess risk. Yet smokers, like those who now refuse vaccines, often continue their dangerous lifestyle in the face of aggressive attempts to persuade them otherwise. Even in absolute numbers, America’s unvaccinated and current-smoker populations seem to match up rather well: Right now, the CDC pegs them at 13 percent and 14 percent of all U.S. adults, respectively, and both groups are likely to be poorer and less educated.