Bacteremia/mortality; Clostridium Infections/mortality; Community-Acquired Infections/mortality; Equipment and Supplies, Hospital/microbiology; Escherichia coli Infections/mortality; Staphylococcal Infections/mortality; Adolescent; Adult; Aged; Aged, 80 and over; Anti-Bacterial Agents/therapeutic use; Bacteremia/drug therapy; Child; Child, Preschool; Clostridioides difficile/isolation & purification; Clostridium Infections/drug therapy; Community-Acquired Infections/drug therapy; Community-Acquired Infections/microbiology; Cross Infection/drug therapy; Cross Infection/transmission; Equipment Contamination; Escherichia coli/isolation & purification; Escherichia coli Infections/drug therapy; Female; Hospitals; Humans; Infant; Male; Methicillin Resistance; Methicillin-Resistant Staphylococcus aureus/isolation & purification; Middle Aged; Multivariate Analysis; Risk Factors; Staphylococcal Infections/drug therapy; United Kingdom/epidemiology; Young Adult