5 Key Takeaways

• 1

  In a retrospective study of 941 patients with suspected lower respiratory tract infections, both metagenomic and targeted NGS had greater diagnostic yield than conventional microbiological testing.

• 2

  Metagenomic NGS sensitivity was 90.6%, compared with 73.4% for targeted NGS, but the methods were evaluated in separate patient groups.

• 3

  Targeted NGS identified 54 cases of Mycobacterium tuberculosis, including 42 missed by conventional testing, and detected Pneumocystis jirovecii when silver staining was negative.

• 4

  After targeted NGS results, 22.6% of patients required antimicrobial treatment escalation, and 66.2% showed clinical improvement, similar to 66.7% with initially appropriate treatment.

• 5

  Both sequencing approaches had low specificity, and the retrospective, single-center study could not establish that sequencing-guided treatment caused improved outcomes.