CORONAVIRUS DIARRHEA (COVID 19) IN CHILDREN coronavirus, children, PCR diagnostics, procalcitonin, diarrhea, pneumonia, severity Marlen Bedelbaev, Zuura Djolbunova, А. Mambetova, Elena Khalupko, Argen Akmatov, O.S. Buchanceva https://doi.org/10.54890/1694-6405_2022_1_95