The Cross of Lorraine – a symbol of the anti-TB “crusade”

The double-barred cross is a modification of the Cross of Lorraine, which is itself a variation of the Jerusalem, or Patriarchal, Cross. Godfrey, Duke of Lorraine and a leader of the First Crusade, commandeered the cross in 1099 when he was made ruler of Jerusalem. In 1902 at the International Conference on tuberculosis held in Berlin, Dr. Gilbert Sersiron of Paris proposed that the Lorraine Cross be made the emblem of the anti-TB "crusade". 

The International Union Against Tuberculosis and Lung Disease also used this symbol as its logo from the time of its official creation in 1920 until 2002.  The union logo has now been amended from just the cross (see new logo on the right of this page) but organisational members of the Union like TB Alert use the cross on their stationery to show that they are part of this international “crusade”.