Vacciner, som medfører beskyttelse mod infektion af Streptococcus pneumonia

摘要

The invention relates to the field of biology, more specifically to the field of immunology and microbiology. The invention further relates to the field of vaccines against microbial infections and especially bacterial vaccines, in particular to pneumococcal vaccines. More in particular, the invention relates to means and methods to identify, select and isolate a vaccine component for passive and/or active immunisation against a microorganism that can be killed by opsonophagocytic cells. The invention relates to a method to identify an opsonophagocytosis inducing antigen as a vaccine component for immunisation against a microorganism. The invention describes three pneumococcal proteins SlrA, IgA1 proteinase, and PsaA, and their use as a vaccine component with or without PpmA. The invention also discloses the use of antibodies against said proteins for passive immunisation.