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

Table 3

Symptoms of ME/CFS in patients with active viral infection/coinfection.

Defining symptoms	Active viral infection
	HHV-6; (𝑛=2)	HHV-7; (𝑛=28)	B19; (𝑛=11)	HHV-6 + HHV-7; (𝑛=10)	HHV-7 + B19 and; HHV-6 + HHV-7 + B19; (𝑛=19)
Subfebrility	0/2	14/28	0/11	7/10	14/19
Lymphadenopathy	2/2	21/28	0/11	8/10	10/19
Malaise after exertion	2/2	28/28	0/11	9/10	14/19
Muscle pain	2/2	28/28	11/11	10/10	19/19
Multijoint pain	2/2	7/28	11/11	10/10	19/19
Impaired memory	0/2	7/28	0/11	6/10	9/19
Impaired concentration	2/2	7/28	11/11	4/10	10/19
Sleep disturbances	2/2	7/28	11/11	10/10	19/19
New headaches	0/2	14/28	11/11	0/10	5/19