Serum IgG antibody response to the protective antigen (PA) of Bacillus anthracis induced by anthrax vaccine adsorbed (AVA) among U.S. military personnel.
The seroconversion rates and geometric mean concentrations (GMC) of IgG anti-PA for stored sera from U.S. military personnel immunized 3, 4, and 6 times with the U.S. licensed anthrax vaccine adsorbed were studied. Anti-PA IgG concentrations were measured by ELISA. All 246 vaccinees had low but detectable pre-immunization anti-PA IgG (GMC 1.83 microg/mL). Three doses elicited a GMC of 59.92 microg/mL and a seroconversion rate of 85.3%, four doses elicited a GMC of 157.44 microg/mL and 67.9% and the sixth of 276.95 microg/mL and 45.5%, respectively. The forth dose elicited 100% seroconversion compared to the pre-immunization level. These results should facilitate comparison between different immunization schedules and new vaccines.
Singer
Darrell E
DE
Division of Retrovirology, Walter Reed Army Institute of Research, Military HIV Research Program, Rockville, MD, USA. dsinger@hivresearch.org
Schneerson
Rachel
R
Bautista
Christian T
CT
Rubertone
Mark V
MV
Robbins
John B
JB
Taylor
David N
DN
D000293:Adolescent; D000328:Adult; D000881:Anthrax / Q000517:prevention & control*; D022122:Anthrax Vaccines / Q000008:administration & dosage / Q000276:immunology*; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial / Q000276:immunology*; D001427:Bacterial Toxins / Q000276:immunology*; D005260:Female; D006801:Humans; D007115:Immunization Schedule; D007074:Immunoglobulin G / Q000097:blood*; D008297:Male; D008875:Middle Aged; D008889:Military Personnel; D014481:United States; D014611:Vaccination
D022122:Anthrax Vaccines; D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001427:Bacterial Toxins; D007074:Immunoglobulin G; C030325:anthrax toxin