Final answer:
Post-exposure prophylaxis for N. meningitidis involves the use of antibiotics to prevent the development of meningococcal disease in individuals who have been exposed to the bacteria.
Step-by-step explanation:
Post-exposure prophylaxis for N. meningitidis involves the use of antibiotics to prevent the development of meningococcal disease in individuals who have been exposed to the bacteria. The recommended antibiotic for prophylaxis is usually a single dose of a third-generation cephalosporin, such as ceftriaxone or ciprofloxacin. This helps prevent the bacteria from multiplying and causing infection. It is important to receive prophylaxis as soon as possible after exposure, ideally within 24 hours, to maximize its effectiveness.