AUSTIN—The number of people in Texas hospitalized with Covid-19 has declined more than 28 percent in the past month, according to the Texas Department of Health Services. As of Feb. 7, Texas hospitals were treating 9,957 Covid-19 patients, down from nearly 14,000 a month ago. The number of new cases in the past week was 123,239 — a 22 percent drop from the record high of 158,922 the week of Jan. 10, according to the Coronavirus Resource Center at Johns Hopkins University.