As governments around the world have pushed their citizens away from populated places to slow the spread of Covid-19, they may not have realized that they were also combatting other infectious diseases, such as the seasonal flu. Recent data clearly show the spread of Covid-19. On March 19, the share of Americans with temperatures indicating they had flu-like symptoms was about 4.9% when it typically would be expected to be about 4.0%. This was likely a result of the spread of Covid-19, according to Kinsa’s researchers. But by March 23, it was down to 3.3%, when it would typically be at 3.7% (the share of fevers decreases quickly at this time of year because of the end of winter).