[Acoustic reflex as one of the indicators of the maturity of the functioning of the auditory analyzer].

Unlabelled: The acoustic reflex is a physiological protective mechanism of the sound-conducting system of the auditory analyzer, which allows to identify various retrocochlear lesions of the human auditory system. The absence of its registration may indicate both pathology and immaturity of the auditory analyzer in children of the first year of life.

Objective: To register the acoustic reflex in children of the first year of life, to identify a full-fledged acoustic reflex at various frequencies and to analyze the dependence of its appearance on the timing of gestation.

Hepatitis E Virus Infection in Voluntary Blood Donors in the Russian Federation.

Transfusion-transmitted hepatitis E virus (HEV) infection is an increasing concern in many countries. We investigated the detection rate of HEV viremia in blood donors in Russia. A total of 20,405 regular repetitive voluntary non-renumerated blood donors from two regions (Moscow and Belgorod) were screened for HEV RNA using the cobas HEV test in mini-pools of six plasma samples.

Ibrutinib in combination with rituximab is highly effective in treatment of chronic lymphocytic leukemia patients with steroid refractory and relapsed autoimmune cytopenias.

Autoimmune hemolytic anemia (AIHA) and pure red cell aplasia (PRCA) are common complications of CLL. The optimal treatment of steroid refractory AIHA/PRCA is not well established. We conducted a multicenter study of ibrutinib and rituximab in patients with relapsed/refractory to steroids AIHA/PRCA and underlying CLL.

AB0 and rhesus blood groups as a risk factor for ARVI COVID-19.

The frequency of AB0 and Rhesus blood groups was studied in 12120 patients with COVID-19, 5180 convalescent plasma donors and 118801 healthy donors from Moscow, Smolensk, Yakutsk, Minsk and Gomel. In infected individuals, the frequency of blood group A was significantly higher than in uninfected individuals (41,54 % and 34,39 % respectively, p<0,05), and the frequency of blood group 0, on the contrary, was significantly lower (27,69 % and 36,71 %, p<0,05). The frequency of blood group A was particularly high among patients who died from ARVI COVID-19 - 45,51 % vs.