<qa>  What is the most common pathogens that cause bacteremia?The most common microbial pathogens which cause bacteremia are Gram negative pathogens, Pseudomonas species, Staphylococcus aureus, Klebsiella species, Pseudomonas aeruginosa, Candida albicans, Acinetobacter baumanii, Streptococcus pneumoniae. 