Research Article

The effect of human mobility and control measures on the COVID-19 epidemic in China

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Science  01 May 2020:
Vol. 368, Issue 6490, pp. 493-497
DOI: 10.1126/science.abb4218

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  • RE: COVID19 impact on human behaviour in Sierra Leone
    • Momoh Gbetuwa, Public Health Professional, Graduate Institute Material And Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
    • Other Contributors:
      • Usman Iqbal, Assistant Professor, Global Health & Development Dept., College of Public Health, Taipei Medical University, Taipei, Taiwan

    Coronavirus disease outbreak since its outbreak it had expanded very quickly across the world starting from China. There has been series of factor leading to this spread but primarily based on human behaviour, clinical, and political interventions undertaken to manage the epidemic and prevent the continues spared of the virus within the human populations in China and the rest of the world. It still remains unclear how these factors of interventions which includes but not limited to, travel restrictions, lock down and social distances that may facilitate COVID-19 spread in the rest of the world. (1)
    As of 31 January, 2020 COVID-19 was declared a global health emergency by World Health Organization (WHO), and WHO named the disease Coronavirus Disease 2019 (COVID-19) on 11 February 2020 (2). Since the inception of corona virus COVID-19 in China the World Health Organisation declared the outbreak a Public Health Emergency of International concern on the 30TH January 2020 (3,4) Sierra Leone on the other hand made its first pronouncement of the outbreak in to the country on the 31st March 2020 (5) and confirmed by World Health Organisation (6). Series of measures have been put in place in other to contain and to prevent the spread of the disease all over the country. The outbreak was only confirmed in the Western urban city at first but later was seen spread in most regions of the country. With the social, economic accompanied consequences of the COVID-19 spread people of...

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    Competing Interests: None declared.
  • The effect of human mobility and control measures on the COVID-19 epidemic in China

    The Coronavirus as a Personalized Enemy of Mankind

    In their Research Article “The effect of human mobility and control measures on the COVID-19 epidemic in China” (Science abb4218, 1–5; 2020), M. U. G. Kraemer et al. write that SARS-CoV-2 was identified in early January 2020 as the “causative virus” of the lung disease Covid-19. The authors refer to a paper of N. Zhu et al. (1.), where Chinese scientists have described the extraction of “human airway epithelial cells to isolate a novel coronavirus named 2019-nCoV.” The name “2019-nCoV” was also used by D. Wrapp et al. (2.) in a major Research Paper, and the accompanying E-Letter entitled “Gender-specific Coronavirus infections in the light of evolution” (3.).
    This inconsistency in virus terminology (SARS-CoV-2 vs. 2019-nCoV) can be resolved as follows. On Febr. 3, P. Zhou et al. (4.) published an article entitled “A pneumonia outbreak associated with a new coronavirus of probable bat origin”. In this study, the authors identified a new pathogen they “tentatively called novel coronavirus 2019 (= 2019-nCoV)”. Based on sequence data, this “species” was found to be ca. 80 % identical to SARS-CoV. Moreover, 2019-nCoV displayed a ca. 96 % identity to “a bat coronavirus”. Remarkably, in human cells, SARS-CoV and 2019-nCoV were found to use the same cell entry receptor (ACE2) (4.).
    On March 5, the “Coronaviridae Study Group (CSG)” published a Review Article entitled “The Species Severe acute respiratory syndro...

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    Competing Interests: None declared.
  • RE: Facing the COVID-19 epidemic in Brazil: Ignorance cannot be our new best friend

    Dear Dr. Kraemer and colleagues
    Brazil has also facing a COVID-19 epidemic which emerged in the Southeast region and quickly spread throughout the national territory. The first case of COVID-19 in Brazil was confirmed on February 26, 2020 in the city of Sao Paulo in a 61-year-old man who was in northern Italy on business. Until March 29, 2020 at least 4,136 cases and 124 deaths have been reported in Brazil. In this country of continental proportions, regional health inequalities (1), low public spending on health (2,3) and scientific research (4), an extremely complex urban scenario and approximately 23 million people living below the poverty line, the COVID-19 epidemic can be devastating. The number of COVID-19 cases is doubling every two or three days in a Europe-like curve and deaths are increasing. Moreover, cases are being massively underreporting due to lack of diagnostic testing and nonspecific symptoms especially in the early stages of the disease. And to make matters worse, cases of COVID-19 were confirmed in four large favelas in the city of Rio de Janeiro. In Brazil, approximately 14 million people are living in slums under with unsanitary conditions, lack of access to health care services, social protection, education, high environmental risks, violence, and virtually no possibility of social isolation for many families.
    While most governments around the world strictly follow the recommendations of World Health Organization (WHO) and public health a...

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    Competing Interests: None declared.
  • Let SARS-CoV-2 be visible is the key to prevent the spread of it

    The current outbreak of viral pneumonia in the city of Wuhan, China, was caused by SARS-CoV-2, probably came from wildlife animals, in China till March 22 more than 81093 cases of the infection, and 3270 deaths. The distance between Hefei and Wuhan is about 345km, only four hours’ drive, in Hefei till March 8 more than 174 cases of the infection, and only1 death, Hefei is not second Wuhan. In America till March 23 more than 35211 cases of the infection, and 471 deaths. How to prevent the spread of SARS-CoV-2?
    I wrote to my friends at January 26: Every city is dead. None is in street, no car is on road, and everyone is very anxious. I wrote to my friends at February 4: From beginning, I want to question: about SARS-CoV-2, what we can do? I wrote to my friends at February 7: We are at home, forbidden to go out for work and shopping, and only one member of our family can go out for shopping twice a week. There is a serious shortage of masks. You are not allowed to go out without masks. It is very terrible, looks like world war.
    You must know the spread of SARS-CoV-2 is terrible. You must ask: what can you do now? We analyzed a lot of data and cases, the best way to save people from COVID-19 is to let SARS-CoV-2 be visible. How to let SARS-CoV-2 be visible? Everyone must know who infected SARS-CoV-2, so the mark (mask) of SARS-CoV-2 is very important. Anyone who goes to hospital for SARS-CoV-2 nucleic acid detection must wear mask. The patient needs to be in isolat...

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    Competing Interests: None declared.

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