Meningococcal infection is caused by Neisseria meningitidis and they spread through respiratory and throat secretions. Once it get absorbed by endocytosis into the body, it get seeded in skin , meninges and other organs and cause a variety of clinical manifestation from  meningitis to septicemic shock. The meningococcal lipopolysachride is an important factor in the infection and host factors like Toll like receptor (TLR) and inflammatory cytokines play an important role in the pathogenesis of the disease.
Meningococcemia pathophysiology
Neoplastic meningitis pathophysiology
Meningococcemia risk factors
Viral meningitis pathophysiology
Bacterial meningitis pathophysiology
Fungal meningitis pathophysiology
Tetanus pathophysiology
Meningococcemia causes