KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Meningitis bacteria (Neisseria meningitidis), computer illustration. N. meningitidis are gram-negative diplococci (spherical bacteria arranged in pairs), transmitted by the respiratory route. In most people they cause either asymptomatic infections or non-severe nasopharingitis, but can also cause severe meningitis and generalised infection (meningococcaemia), particularly in children. The surface of bacteria are covered with pilli which take part in attachment of bacteria to cells and surfaces.
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