Royal Caribbean Group said on Thursday it was aiming to restart its U.S. cruises in July after the U.S. Centers for Disease Control and Prevention (CDC) issued new measures to speed up approvals, sending its shares up 2.5 percent. Late on Wednesday, the CDC made public a letter to the cruise industry that said it was “committed” to the resumption of passenger operations in the United States by mid-summer. It followed a lawsuit from Alaska and Florida that sought to overturn the health agency’s year-long ban on the cruise industry’s operations due to the COVID-19 pandemic. A ship may skip simulated voyages and directly start open water sailing if it attests that 98 percent of its crew and 95 percent passengers are fully vaccinated, the CDC said on Wednesday. The agency also said it would respond within five days to applications for simulated voyages, down from an anticipated 60 days. …