Bacterial meningitis is a serious infection that affects the protective membranes covering the brain and spinal cord, known as the meninges. It is caused by bacteria entering the bloodstream and reaching the central nervous system. Symptoms often include fever, headache, stiff neck, and sensitivity to light. If not treated quickly, it can lead to severe complications, including brain damage or even death. This condition can affect anyone, but certain groups, like infants and young adults, are at higher risk. Vaccines are available to help prevent some types of bacterial meningitis, making awareness and early treatment crucial for reducing its impact.