Pharmaceutical company executives have been hinting for months that booster shots will be necessary to maintain the efficacy of COVID-19 vaccines. A study of such boosters is already underway. But the companies that stand to profit from these shots shouldn’t get to unilaterally determine the need for a repeat mass vaccination campaign without scientific questioning. Moreover, focus groups among the vaccine-hesitant have shown that talk of boosters can decrease the likelihood of people getting a vaccine now. Bodies of scientific research indicate that your immune system should offer you long-lived protection from reinfection if you’ve been vaccinated, even with the...