The Covid-19 pandemic has significantly changed the world globally. There have been more than 193 million confirmed cases of Covid-19 so far, including more than 4 million deaths.
Countries around the world have achieved tremendous accomplishments in controlling the spread of this virus after the outbreak in 2019 by doing surveillance, monitoring and tracking, virus sequencing and testing, with the development of different types of vaccines as well as the mass vaccination campaign all over the world.
Chinese medical doctors have undertaken the epidemiology, clinical manifestations, diagnosis, treatments and prevention that can be shared, particularly in Africa, Latin America and Asia, and the rest of the world. Countries did not or were not willing to take the right action to control this pandemic. Some of them were inactive and failed to focus on fighting this pandemic, resulting in a wide spread of the SARS-CoV-2, both domestically and abroad. In South Africa, the earliest confirmed cases were all from European or American countries. Now most of them have acknowledged their previous mistakes and understood the necessity of isolation and social distancing to stop the spread of SARS-CoV-2.
This is an important first step. Recently, the WHO has planned to conduct the phase 2 origin tracing study. This study is necessary, but should be conducted based on what we have known, and should continue to look for more possible early cases in a wider range around the globe and to further understand the role of cold chain and frozen food in virus transmission.
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