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Reverse cumulative distribution curves (RCDCs) for PT-IgG and PT-neutralising antibody titres before and after booster vaccination with recombinant acellular pertussis (aPgen or TdaPgen) or chemically detoxified Tdap.
Blue lines present RCDCs before vaccination, purple lines 28 days after vaccination, red lines 1 year after vaccination, yellow lines 2 years after vaccination, and green lines 3 years after vaccination.
