Mississippi College

Erin Norcross, Ph.D.

Streptococcus pneumoniae, pneumococcus, is an important worldwide pathogen.  It is responsible for a variety of diseases including pneumonia, meningitis, bacteremia, and otitis media.  Additionally, it is a key ocular pathogen capable of causing endophthalmitis, keratitis, and conjunctivitis.  Traditionally, pneumococcal infections affect primarily elderly individuals or young children due to their weakened immune system; however, pneumococcal eye disease can affect people of all ages.  S. pneumoniae possesses a variety of virulence factors including a polysaccharide capsule, pneumolysin (PLY), and neuraminidases (Nan) that enable this pathogen to cause disease.  I am interesting in better understanding the role of these important virulence factors and how they interact with host immune responses. 

Webpage: http://www.mc.edu/faculty/Norcross

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