TRENDS OF COVID-19 IN THE CENTRAL AFRICA SUB-REGION: EFFECTIVE HEALTH CARE, EFFECT OF ENDOGENOUS PARAMETERS OR A MATTER OF TIME? ArticleArsene M.MJ., Mouafo H.T., Podoprigora I.V., Smolyakova L.A., Yashina N.V., Ermolaev A.V., Mefyod K.M., Zhygunova A.V.JOURNAL OF PHARMACEUTICAL RESEARCH INTERNATIONAL. Том 33. 2021. С. 170-186