Standard laboratory parameters, notably CRP, ESR and WBC were
normal except for anemia. Serum concentrations of IgM were elevated
8-fold the upper limit of normal. Serological tests (ELISA) were positive
for the following pathogens: tick-borne encephalitis virus, Borrelia
burgdorferi, measles virus, HTLV1/2, adenovirus, respiratory syncytial
virus, Histoplasma capsulatum. None of these infections could be confirmed
by the clinical course or other diagnostic procedures. In serology
for autoimmune diseases, auto-antibodies against anti-Cardiolipin IgM,
anti-ß2-Glykoprotein and APSA IgM were also positive. For a summary
of relevant clinical and laboratory findings see