Infections and severe mental illness: a population-based matched cohort study
By
Sharon L Cadogan
Georgia R Gore-Langton
Kathryn E Mansfield
John Tazare
Seena Fazel
Ian J Douglas
Caroline Morton
Naaheed Mukadam
Charlotte Warren-Gash
May 27, 2026
Clinical Scorecard: Acute Infections and Their Association with Severe Mental Illness: A Matched Cohort Analysis from a Population-Based Study
At a Glance
Category Detail
Condition Severe Mental Illness (SMI) Key Mechanisms Acute infections associated with systemic inflammation potentially influencing mental health. Target Population Adults (≥18 years) with acute infections. Care Setting Primary care settings utilizing electronic health records.
Key Highlights
Each type of acute infection was associated with increased risk of SMI. Meningitis/encephalitis had the highest associated risk (HR 3.36). Sepsis also showed a significant association with SMI risk (HR 1.69). Infections such as UTI and gastroenteritis were linked to increased SMI risk. Study utilized a large cohort from the Clinical Practice Research Datalink. Guideline-Based Recommendations
Diagnosis
Monitor for SMI in patients with a history of acute infections. Management
Provide timely treatment for infections and targeted mental health support. Monitoring & Follow-up
Follow-up on mental health outcomes in patients post-infection. Risks
Increased risk of SMI following various acute infections. Patient & Prescribing Data
Adults with acute infections presenting in primary care.
Consider mental health evaluations for patients recovering from severe infections.
Clinical Best Practices
Optimize infection prevention strategies. Implement timely treatment protocols for acute infections. Integrate mental health risk management in post-infection care. Related Resources & Content
