TY - JOUR T1 - COVID-19 Pandemic: The Causative Agent is New, The Problem is Old JO - International Journal of Coronaviruses VL - 3 IS - 1 SP - 14 EP - 19 PY - 2021/1// T2 - AU - Igor, Klepikov SN - 2692-1537 DO - https://doi.org/10.14302/issn.2692-1537.ijcv-21-3626 UR - https://openaccesspub.orgijcv/article/1651 KW - pneumonia KW - COVID-19 KW - pathogenesis KW - SARS-CoV-2 ER -