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Table 2 Odds ratios of DNA virus infection in ME/CFS patients

From: Evaluation of viral infection as an etiology of ME/CFS: a systematic review and meta-analysis

Infection

PCR

Antibody detection

(Number. of study, PCR/Ab)

Number. of patients/controls

Odds ratio

Number. of patients/controls

Odds ratio

 

[95% CI]

[95% CI]

Enveloped DNA virus

 HHV-1, 2, 3 (0/1)

None

Healthy (65/87)

0.93 [0.60, 1.45]

 EBV (HHV-4) (6/8)

Healthy (374/256)

0.84 [0.54, 1.31]

Healthy (666/396)

1.26 [0.83, 1.91]

  

MS (250/49)

1.81 [0.82, 3.99]

  

FM (65/11)

1.20[0.13, 11.37]

  

Non-ME/CFS (10/28)

Not estimable*

  

CF(101/35)

1.06 [0.31, 3.56]

 CMV (HHV-5) (2/5)

Healthy (80/72)

0.91 [0.40, 2.08]

Healthy (395/255)

0.70 [0.49, 1.01]

  

MS (250/40)

0.52 [0.27, 1.03]

  

FM (65/11)

0.29 [0.06, 1.47]

  

Non-ME/CFS (165/34)

Not estimable

 HHV-6 (13/11)

Healthy (768/510)

1.47 [1.10, 1.98]

Healthy (853/587)

1.42 [1.00, 2.01]

CF (3/2)

3.00 [0.08, 115.34]

MS (250/40)

1.21 [0.39, 3.73]

Non-ME/CFS (8/7)

0.83 [0.08, 8.24]

FM (65/11)

1.09 [0.21, 5.76]

 HHV-7 (6/4)

Healthy (255/213)

1.67 [1.07, 2.60]

Healthy (228/217)

2.28 [1.39, 3.73]

  

FM (65/11)

1.67 [0.40, 6.88]

 HHV-8 (2/2)

Healthy (22/22)

Not estimable

Healthy (57/47)

0.58 [0.11, 3.14]

Non-ME/CFS (8/7)

Not estimable

  

 HSV-1 (1/2)

Healthy (30/16)

1.07 [0.09, 12.81]

Healthy (272/128)

1.18 [0.77, 1.81]

  

MS (250/40)

0.59 [0.30, 1.16]

 HSV-2 (0/2)

None

Healthy (272/128)

1.27 [0.80, 2.00]

MS (250/40)

0.97 [0.49, 1.91]

 VZV (1/2)

Healthy (22/22)

Not estimable

Healthy (250/106)

0.58 [0.12, 2.79]

  

MS (250/40)

0.78 [0.09, 6.37]

Non-enveloped DNA virus

 Parvovirus B19 (4/3)

Healthy (328/306)

5.55 [2.61, 11.79]

Healthy (366/309)

4.33 [1.22, 15.37]

 JC virus (1/0)

Healthy (22/22)

Not estimable

None

 BK virus (1/0)

Healthy (22/22)

Not estimable

None

  1. MS multiple sclerosis (demyelinating disease in CNS), FM fibromyalgia (chronic widespread pain), CF chronic fatigue (over 6 months-fatigue)
  2. Not estimable; Any infection was not detected either in ME/CFS group or control group, thus could not synthesize odds ratios