Final answer:
The most common bacteria that can cause bacterial meningitis are Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae. The treatment for young and immune-suppressed individuals usually involves the use of ß-lactam antibiotics.
Step-by-step explanation:
The three most common bacteria that can cause bacterial meningitis are Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae. These bacteria are similar in that they are all spread from person to person through respiratory secretions and can enter the blood through the mucous membranes of the oropharynx and nasopharynx.
For the treatment of bacterial meningitis in young and immune-suppressed individuals, ß-lactam antibiotics such as intravenous penicillin or ampicillin plus gentamicin are commonly used. However, the specific treatment may vary based on the type of bacteria causing the infection.