As 2020 was the year of the pandemic, COVID-19 loomed large in the world of retractions, too. According to our tracker in early December, 39 articles about the novel coronavirus have been retracted from preprint servers or peer-reviewed journals so far—a number we’re confident will grow. (That number does not include the retraction of an article from a Johns Hopkins student newspaper claiming that COVID-19 has had “relatively no effect on deaths in the United States.”) That’s out of a total of more than 1,650 retractions catalogued to date in 2020. Here are our picks for the most significant pandemic-related retractions: