Lost in the U.S. launch of the coronavirus vaccine is a fact most don’t know when they roll up their sleeves: In rare cases of serious illness from the shots, the injured are blocked from suing and steered instead to an obscure federal bureaucracy with a record of seldom paying claims.Housed in a nondescript building in a Washington, D.C., suburb, the Countermeasures Injury Compensation Program has just four employees and few hallmarks of an ordinary court. Decisions are made in secret by government officials, claimants …