Pneumococcal meningitis forms once *S. pneumoniae* crosses the blood-brain barrier and can cause blood infection as well. 

University of Wisconsin - Madison

*Streptococcus pneumoniae* is a gram-positive encapsulated bacterium. It causes infection of the meninges called pneumococcal meningitis. This bacterium is also present in the microbiota of young children.

*Streptococcus pneumoniae*

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

*Streptococcus pneumoniae* has pilin to adhere to host cells and virulence factor B for attaching to cells of the respiratory tract. It has toxins that cause inflammation as well.

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