As the COVID-19 is still spreading in more than 180 countries, according to WHO. There is a need to understand the dynamics of this infection and predict its the impact on the public health capacity. This work aims to forecast the progress of the disease in three countries from different continents: The United States of America, the United Arab Emirates and Algeria. The existing data shows that the fatality of the disease is high in elderly people and people with comorbidity. Therefore, we consider an age-structured model. Our model also takes into consider two main components of the COVID-19 (a) the number of Infected hospitalized people, therefore, we estimate the number of beds (acute and critical) needed (2) the possible infection of the healthcare personals (HCP). Hence, the model predict the peak time and the number of infectious cases at the peak before and after the implementation of non-pharmaceutical interventions (NPI), and we also compare this finding with case of full lockdown. Finally, we investigate the impact of the shortage of proper personal protective equipment (PPE) on the spread of the disease.

据世卫组织称，由于COVID-19仍在180多个国家中传播。有必要了解这种感染的动态，并预测其对公共卫生能力的影响。这项工作旨在预测来自不同大陆的三个国家的疾病进展：美利坚合众国，阿拉伯联合酋长国和阿尔及利亚。现有数据表明，该疾病的致死率在老年人和合并症患者中较高。因此，我们考虑年龄结构模型。我们的模型还考虑了COVID-19的两个主要组成部分（a）受感染住院人数，因此，我们估算了所需的床位数量（急性和重症）（2）医护人员可能受到的感染（HCP） ）。因此，该模型可预测实施非药物干预（NPI）前后的高峰时间和高峰时期的传染病病例数，我们还将这一发现与完全封锁的情况进行比较。最后，我们调查了缺乏适当的个人保护设备（PPE）对疾病传播的影响。