Possible associations between antidepressants and infection risk

Mechanism or outcomeEvidence
Immunosuppression

Reduced leukocyte count [131]

Reduced CD4+ count [119, 121]

Reduced immune response in burns patients [132]

Impaired tumor surveillance [140]

Increased colonizationIncreased nasal bacterial colonization [138]
Increased infection risk

Infections in general [133]

Post-operative infections [134]

Respiratory infections [136]

Clostridium difficile infection [135]

Worse outcomes after infectionIncreased mortality in hospitalized patients [137]
Antimicrobial resistanceSelection pressure towards antibiotic resistance in Escherichia coli [139]