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Geometric mean concentrations (GMC) by vaccine group through day 360 postvaccination. (A) Groups 1 and 2: 60-μg doses (without AAHSA). (B) Groups 3 and 4: 60-μg doses (with AAHSA). (C) Groups 5 and 6: 90-μg (with AAHSA) and PBO doses. AAHSA, amorphous aluminum hydroxyphosphate sulfate adjuvant.
