Pneumococcal pneumonia

Pneumococcal pneumonia is an acute lower respiratory tract infection caused by the bacterium *Streptococcus pneumoniae*, representing one of the leading causes of bacterial community-acquired pneumonia It affects the pulmonary parenchymal tissue—frequently producing lobar consolidation—and disproportionately impacts adults aged 65 and older, children younger than 5, and individuals with chronic cardiopulmonary diseases or immunocompromising conditions

It affects the pulmonary parenchymal tissue—frequently producing lobar consolidation—and disproportionately impacts adults aged 65 and older, children younger than 5, and individuals with chronic cardiopulmonary diseases or immunocompromising conditions

The clinical state is characterized by alveolar inflammation, purulent exudation, and impaired gas exchange, manifesting with an abrupt onset of fever, rigors, dyspnea, pleuritic chest pain, and a productive cough that often yields classic rust-colored sputum