A coronavirus resurgence is wiping out two months of progress in the U.S. and sending infections to dire new levels across the South and West, with hospital administrators and health experts warning Wednesday that politicians and a tired-of-being-cooped-up public are letting a disaster unfold. The U.S. recorded a one-day total of 34,700 new confirmed COVID-19 cases, the highest level since late April, when the number peaked at 36,400, according to a count kept by Johns Hopkins University. While newly confirmed infections have been declining steadily in early hot spots such as New York and New Jersey, several other states set single-day records this week, including Arizona, California, Mississippi, Nevada, Texas and Oklahoma. Some of them also broke hospitalization records, as did North Carolina and South Carolina.