Streptococcus pneumoniae is a rare bacteria that can cause pneumonia, meningitis or a bloodstream infection. The disease is spread from person-to-person by direct contact with respiratory secretions, like saliva or mucus. Symptoms generally include fever and shaking or chills. Other common symptoms may include headache, cough, chest pain, disorientation, shortness of breath, weakness and occasionally stiff neck. Although anyone can get invasive pneumococcal disease, it occurs more frequently in infants, young children, African Americans, some Native American populations, the elderly or in people with serious underlying medical conditions.