Table 2 Detection efficiency comparison of various pathogens by mNGS and clinical conventional testing.

From: Metagenomic next-generation sequencing versus traditional laboratory methods for the diagnosis of central nervous system opportunistic infections in HIV-infected Chinese adults

 

mNGS

Clinical conventional testing

X2

P

Virus

 Detected cases of infection (n,%)

32 (66.7)

17 (35.4)

9.379

0.002

 Positive detection rate of virus strains

42/46 (91.3)

19/46 (41.3)

25.737

0.000

 Detection rate of virus strains not detected by control group

23/42 (54.8)

0/19 (0)

16.702

0.000

Bacteria

 Detected cases of infection (n,%)

8 (16.7)

0

6.682

0.010

 Positive detection rate of bacteria strains

16/16 (100.0)

2/16 (12.5)

24.889

0.000

 Detection rate of bacteria strains not detected by control group

14/16 (87.5)

0/2 (0)

7.875

0.005

Fungi

 Detected cases of infection (n,%)

10 (20.8)

8 (16.7)

0.274

0.601

 Positive detection rate of fungi strains

10/14 (71.4)

9/14 (64.3)

0.164

0.686

 Detection rate of fungi strains strains not detected by control group

5/10 (50.0)

4/9 (44.4)

0.059

0.809

Atypical pathogen

 Detected cases of infection (n,%)

5 (10.4)

0

4.444

0.035

 Positive detection rate of atypical pathogen strains

5/5 (100.0)

0/5 (0)

10.000

0.002

 Detection rate of atypical pathogen strains not detected by control group

5/5 (100.0)

0 (0)

Total detection rate of pathogen strains not detected by control group

47/73 (64.4)

4/30 (13.3)

22.167

0.000