Communicable Disease Center's Board of U. S. Civil Service Examiners, Atlanta, Ga., announces examinations for Medical microbiologist, in specialized fields for bacteriologist, immuno-serologist, parasitologist, mycologist, virologist, GS-9, $5,440 through GS-15, $11,610, examination announcement 5-82-2 (56) issued Sept. 25, 1956.