The clinical and laboratory algorithm for the diagnosis of acute cytomegalovirus infection in children

Abstract

The aim. of the study is to optimize the Iaboratory diagnosis of cytomegaIovirus infection in chiIdren by finding cIinicaI and Iaboratory predictors corresponding to the acute stage of infection.MateriaIs and methods. The resuIts of 65 chiIdren age from 1 to 3 years outpatient of with cytomegaIovirus mono-nucIeosis are presented. Markers of herpes virus infections (CMV, EBV, HHV-6 type) were determined by PCR-reaI time (bIood, saIiva) and seroIogicaIIy (IgM, IgG).ResuIts. It has been estabIished. that acute cytomegaIovirus infection can occur both, in the form of infectious mononu-cIeosis and. be atypicaI accompanied, by proIonged fever and. severe Iymphadenopathy in most cases. Indirect Iaboratory markers of acute cytomegaIovirus infection are neutropenia and. hypoimmunogIobuIinemia IgA and. IgG. Acute cytomeg-aIovirus infection is accompanied by the virus shedding in both bIood and saIiva in aImost aII patients and the median vaIues of the viraI Ioad are different: 3,9 Ig DNA copies / mI for bIood, 4,9 Ig DNA copies / ml for saIiva. Using mathemati-caI modeIing, the “cut off" vaIue of viraI Ioad. for saIiva was determined, to be 4,1 Ig DNA copies / mI corresponding to 65.0% of the probabiIity of deveIoping acute CMV infection.ConcIusion. The study made it possibIe to substantiate the aIgorithm. for diagnosing acute cytomegaIovirus infection. in young chiIdren which. incIudes the most significant cIinicaI Iaboratory predictors, as weII as the caIcuIated. “cut off" vaIue of viraI Ioad. for saIiva equaI to 4,1 Ig DNA copies / mI. Determining the viraI Ioad in the saIiva of patients can be used, as an additionaI diagnostic criterion for the atypicaI form of acute cytomegaIovirus infection.

Keywords

• цитомегаловирус
• дети
• вирусовыделение
• полимеразная цепная реакция
• вирусная нагрузка
• диагностический алгоритм