Association of Active Human Herpesvirus-6, -7 and Parvovirus B19 Infection with Clinical Outcomes in Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

Table 2

Plasma cytokine levels in patients with ME/CFS.

Viral infection	TNF-alpha; (pg/mL)	IL-6; (pg/mL)	IL-4; (pg/mL)
Without ( 𝑛=6)	7.71 ± 3.07	1.32 ± 0.43	<2
Latent ( 𝑛=32)	18.81 ± 2.52	2.56 ± 1.02	<2
Active ( 𝑛=68)
Single HHV-7 (𝑛=28)	44.81 ± 10.56	7.76 ± 2.45	<2
Single B19 (𝑛=11)	44.12 ± 11.67	15.62 ± 4.63	<2
Dual HHV-6 + HHV-7; (𝑛=10)	50.38 ± 8.74	11.22 ± 3.14	<2
Dual HHV-7 + B19; (𝑛=15)	49.89 ± 16.1	28.70 ± 3.05	<2
Triple HHV-6 + HHV-7 +; B19 (𝑛=4)	73.33 ± 18.76	29.67 ± 4.52	<2