Abstract: The present invention relates to an anti-haemolytic binding member comprising at least one binding domain capable of specifically binding Pneumolysin, in particular to a binding member having at least two biding domains, to the use of said binding members in diagnostic methods as well as for treatment. In a preferred embodiment the binding member is an antibody, such as a human antibody, or a fragment thereof, and it may also be a bispecific antibody.