Da immunresponset over for pertussis antigen efter administration af Infanrix Penta er ækvivalent med det som ses efter Infanrix, anses den beskyttende effekt af de to vacciner at være ækvivalent.
As the immune response to pertussis antigens following Infanrix Penta administration is equivalent to that of Infanrix, the protective efficacy of the two vaccines is expected to be equivalent.