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OPKA - Opsonophagocytic-killing assay
Streptococcus pneumoniae is a major cause of pneumonia in young children and the elderly. New vaccines against this bacterium are required because conventional antibiotics are becoming less effective due to the increasing numbers of multi drug-resistant S. pneumoniae. The OPKA is a useful test for measuring antibody function and is a good surrogate assay for immune protection.
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