When the COVID pandemic led to widespread economic shutdowns and stay-at-home orders in the spring of 2020, many media outlets and pundits speculated this might lead to a baby boom. But it appears the opposite has happened: birth rates declined in many high-income countries amid the crisis, a new study shows.Arnstein Aassve, a professor of social and political sciences at Bocconi University in Italy, and his colleagues looked at birth rates in 22 high-income countries, including the U.S., from 2016 through the beginning of 2021. They found that seven of these countries had statistically significant declines in birth rates in the final months of 2020 and first months of 2021, compared with the same period in previous years. Hungary, Italy, Spain and Portugal had some of the largest drops: reductions of 8.5, 9.1, 8.4 and 6.6 percent, respectively. The U.S. saw a decline of 3.8 percent, but this was not statistically significant—perhaps because the pandemic’s effects were more spread out in the country and because the study only had U.S. data through December 2020, Aassve says. The findings were published on Monday in the Proceedings of the National Academy of Sciences USA.