NFGNB Case Study

The unusual members of NFGNB represent a challenge for the routine clinical microbiological laboratories, owing to their complex identification along with their unpredictable antimicrobial susceptibility patterns 14.
The isolation rate of NFGNB (18.7%) recorded in our study comes in agreement with a previous Indian study carried out in a tertiary care hospital, where it was 16.18% 15. Whereas, it comes higher the result recorded in another Indian tertiary care hospital where it was 9.32% 16.
The unusual NFGNB had a prevalence of 3.3% among all tested specimens. This comes much similar to what was reported previously among respiratory tract infection in a tertiary care hospital 17. Among the isolated unusual NFGNB in the current study, BCC was
pseudomallei was obtained accounting for 5.9% of the unusual NFGNB and 1.03% of the total NFGNB. Similar results were reported in a previous study where two isolates among 33 unusual NFGNB were B. pseudomallei accounting for 6.1% of unusual NFGNB isolated from patients with nosocomial pneumonia
Our result comes in contrast to a previous study where 62.7% of BCC were isolated from blood specimens, 30.1% (25/83) were from sputum, 3.6% were from skin and soft tissue infection and only 3.6% were from urine specimens 14. It also differs from a previous Egyptian study carried out in Alexandria where the highest percent (85.7%) of BCC isolates were from pus specimens, followed by sputum (11.4%) and only 2.9% were from urine specimens 20. In another study, ETA was the main source for BCC isolation (58.9%) in a Turkish hospital, followed by blood (25.6%), urine (5.1%) and finally pus with the lowest isolation ratio (7.6%) 21. This difference could be attributed to the difference of patients along with the hospital wards selected in the previous