The coronavirus pandemic has led to a new era of inflation inequality, economists warn, in which poor households bear the brunt of rising prices. That's because a bigger portion of their budget goes toward categories that have spiked in cost. Food is up 6.4% over the past year, for example, while gasoline jumped a whopping 58%. And now many people are facing those higher prices as federal stimulus programs fade away. "They're essentially looking to stretch a dollar most days," said Chris Wimer ... at Columbia University. "It's going to lead to difficult choices between putting gas in the car or paying for your kids' child care or putting food on the table." A recent analysis by the Penn Wharton Budget Model found that low- and middle-income households spent about 7% more in 2021 for the same products they bought in 2020 or in 2019. That translates into about $3,500 for the average household. Meanwhile, pandemic-related production disruptions have driven up the costs of commodities that poor households rely on. The findings dovetail with an analysis [by] economist Alberto Cavallo. He showed that low-income consumers experienced price increases that were roughly double those of wealthier ones. In 2019, a joint paper from researchers at Columbia and the London School of Economics estimated that about 3 million more people would qualify as living in poverty if their incomes were adjusted for the inflation rates they experience.