Keywords: Streptococcus pneumoniae pneumonia etiology

    Streptococcus pneumoniae (gtreptococcuspneumonias), formerly Streptococcus pneumoniae, or pneumococcus (pneumococci), Gram-positive diplococci, genus Streptococcus one. Streptococcus pneumoniae according to the specific polysaccharide capsular antigen typing Denmark 84 type (Danish Serum Institute antiserum sources approved by WHO), the United States 86 serotypes. Our nationwide pathogens investigation in the 1980s, strains isolated from blood, cerebrospinal fluid, and middle ear secretions type 5, is followed 6,1,19,23,14,2,3 type. Streptococcus pneumoniae can cause lobar pneumonia, are the primary, most seen in children over 3 years old, older children more. Therefore, when the body’s defense capabilities mature, make lesions confined to one lobe or a segment without proliferation. Infant period can occur even. Climate sudden changes in body resistance is lowered, the onset of more and more common in winter and spring, may be related to the prevalence of respiratory viral infections.