U.S. regulators to block Anthem-Cigna, Aetna-Humana deals Thursday-source

NEW YORK, July 21 (Reuters) - U.S. antitrust regulators will

announce on Thursday plans to file lawsuits to block two

separate health insurance mergers, Anthem Inc.'s

purchase of Cigna Corp. and Aetna Inc.'s

acquisition of Humana Inc., according to a source

familiar with the matter.

Read more