The U.S. is already grappling with unrelated shortages of medications for children, including pain relievers and antibiotics. U.S. officials and medical suppliers said in interviews that they were closely monitoring the situation in China and had yet to see any shortages directly linked to the latest wave of infections there. Biden administration officials said they had been coordinating across federal agencies to monitor the supply chain and didn't anticipate significant shortages, unlike at the start of the pandemic, because of government efforts to bolster U.S. stockpiles and moves by companies to lessen their dependence on China. “We’re looking a lot…