Table 3: Symptoms of ME/CFS in patients with active viral infection/coinfection.

Defining symptomsActive viral infection
HHV-6
( )
HHV-7
( )
B19
( )
HHV-6 + HHV-7
( )
HHV-7 + B19 and
HHV-6 + HHV-7 + B19
( )

Subfebrility0/214/280/117/1014/19
Lymphadenopathy2/221/280/118/1010/19
Malaise after exertion2/228/280/119/1014/19
Muscle pain2/228/2811/1110/1019/19
Multijoint pain2/27/2811/1110/1019/19
Impaired memory0/27/280/116/109/19
Impaired concentration2/27/2811/114/1010/19
Sleep disturbances2/27/2811/1110/1019/19
New headaches0/214/2811/110/105/19