Study estimates US Covid-19 infections may be 4 times higher than reported From CNN's Deidre McPhillips Covid-19 infections in the United States may have been four times higher than the number of cases reported, with 1 in 7 US residents infected by mid-November, according to a new study. As of November 15, about 10.8 million reported cases of Covid-19 were reported to the US Centers for Disease Control and Prevention, but the study suggests the actual number of infections was closer to 46.9 million. The study also suggests that approximately 35% of Covid-19 deaths may not be reported.