The results of laboratory tests performed as part of the etiological study of febrile syndrome showed: IgM and IgG antibodies against cytomegalovirus, dengue and Toxoplasma gondii, negative tuberculin skin test IgM / tuberculin skin test, negative IgM / tuberculin series, positive IgM / tuberculin skin test, IgM / tuberculin skin test, IgM / tuberculin skin test positive; IgM / tuberculin skin test, IgM / tuberculin skin test / tuberculin skin test, IgM / tuberculin +