Final answer:
Meningitis treatment involves antibiotics specific to the causative bacteria. Common bacteria causing meningitis include Haemophilus influenzae, Neisseria meningitidis, and Streptococcus pneumoniae, with Haemophilus influenzae now less common due to the Hib vaccine.
Step-by-step explanation:
Drugs for Meningitis-causing Bacteria
Meningitis is an acute inflammation of the protective membranes covering the brain and spinal cord known as the meninges. Treatment for meningitis depends on the specific causative bacterium. The Gram-negative bacillus Haemophilus influenzae, once a common cause of meningitis in children, is now less prevalent due to the highly effective Hib vaccine. Neisseria meningitidis and Streptococcus pneumoniae are treated with antibiotics such as penicillin or cephalosporins. For Pseudomonas and other Gram-negative bacteria, antipseudomonal penicillins or fluoroquinolones are used. Streptococcus agalactiae, a Gram-positive cocci typically affecting newborns, is treated with intravenous ampicillin plus gentamicin. Lastly, Listeria monocytogenes is generally treated with ampicillin or penicillin in combination with gentamicin for synergistic effect.