<s>[INST] A 50-year-old man is admitted to the hospital with symptoms of severe headaches, fever, and stiff neck. The patient has a history of hypertension and hyperlipidemia. He is taking medications for his condition. After initial evaluation, the patient is diagnosed with bacterial meningitis. Identify the two (2) most likely bacterial pathogens that would cause meningitis in an adult aged 50 years or older.[/INST]