Final answer:
The common extra meningitis bug in patients with brain surgery can be caused by bacteria such as Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae. Other bacteria that can cause meningitis include Listeria monocytogenes, Escherichia coli, and Streptococcus agalactiae.
Step-by-step explanation:
Common extra meningitis bug in patients with brain surgery can be caused by bacteria such as Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae, which are spread through respiratory secretions and can enter the blood. Other bacteria that can cause meningitis include Listeria monocytogenes, Escherichia coli, and Streptococcus agalactiae. These bacteria can spread through the blood or from infection in the sinuses or nasopharynx. Streptococcus agalactiae, also known as Group B streptococcus, can cause meningitis in newborns after transmission from the mother.