Home Microbiological Sampling in a Pediatric Cystic Fibrosis Population: Pandemic Implementation and Ongoing Use

Area of Science:

• Medical Microbiology
• Pediatric Pulmonology
• Diagnostic Evaluation

Background:

• Home-based respiratory sampling is increasingly relevant in cystic fibrosis (CF) care, especially post-COVID-19.
• Previous studies suggest comparable organism detection between home and clinic-collected samples in pediatric CF patients.

Purpose of the Study:

• Critically appraise the methodology and interpretation of findings on home-based CF microbiological sampling.
• Highlight key considerations for evaluating diagnostic equivalence in home-based CF surveillance.

Main Methods:

• Synthesized evidence from CF microbiology and telehealth literature.
• Assessed factors influencing comparability: selection bias, specimen types, collection technique, transport/storage, culture-based diagnostics, and antimicrobial exposure.

Main Results:

• Methodological factors like selection bias and specimen heterogeneity can impact generalizability and diagnostic sensitivity.
• Variations in caregiver technique, transport/storage, and reliance on culture methods affect microbial recovery and pathogen detection.
• Recent antibiotic exposure can influence culture yield.

Conclusions:

• Home-based microbiological sampling is feasible in pediatric CF care.
• Important methodological considerations remain for accurate diagnostic equivalence.
• Future studies require standardized protocols, antimicrobial exposure documentation, and same-day sampling designs for rigorous evaluation and clinical integration.