BOSTON, Oct 3 (Reuters) - The CEO of Delta Air Lines (DAL.N) said on Sunday that the company has not decided whether to mandate COVID-19 vaccines as the White House has requested. The vaccination rate at the airline should be above 90% by Nov. 1, CEO Ed Bastian told reporters on the sidelines of a conference of airlines group IATA in Boston. The White House is pressing major U.S. airlines to mandate COVID-19 vaccines for employees by Dec. 8 - the deadline for federal contractors. Large U.S. airlines have a number of federal contracts. read more