Systematic review with no meta-analysis of coronavirus COVID-19

AIMS: COVID-19 is a new virus which has spread to most countries in the world. Many papers have been published on the clinical manifestations of this virus. This paper concentrates only on the clinical cases and prognosis of COVID-19 presented in the literature. METHODS: Systematic review is done, and taken into consideration, all published papers in the literature related to COVID-19. Inclusion and exclusion criteria have been applied. RESULTS: Few papers have been determined after many filtrations of all published papers concerning inclusion and exclusion criteria to assess outcome of existing COVID-19. Most published papers or reports did not provide full details for each case. CONCLUSION: Most clinical description data in these reports are so limited and missing some of the critical elements such as the date of infection, source of infection, symptoms, diagnostic criteria, incubation of infection, transmission of infection, number of identified cases after contact with infected patients, and health workers are affected or not by treatment of infected patients, patient age, and type of study. No clear evidence of the treatment plan and the prevention and most data in literature depending on personal experience only which is different from country to others.