The number of novel coronavirus cases in the United States topped 7 million on Thursday as Midwest states reported spikes in Covid-19 infections in September, according to a Reuters tally. The US now accounts for more than 20% of the global infections. The latest milestone comes just days after the US surpassed over 2 lakh Covid deaths, the world's highest death toll from the virus. Each day, over 700 people die in the United States from coronavirus infection.