Subject
Disease Progression; Community-Acquired Infections; Immunocompetence; Drug Resistance; Pneumonia; Bacterial; Microbial; Severity of Illness; Antibiotics – Therapeutic Use; Community-Acquired Infections – Diagnosis; Community-Acquired Infections – Drug Therapy; Community-Acquired Infections – Microbiology; Bacterial – Drug Therapy; Bacterial – Microbiology; Bacterial – Prevention and Control; Community-Acquired Infections – Prevention and Control; Bacterial – Diagnosis; Streptococcus – Drug Effects; Vaccines – Therapeutic Use