Tri-primer-enhanced strand exchange amplification combined with rapid lateral flow fluorescent immunoassay to detect SARS-CoV-2

The Analyst ◽  
2021 ◽  
Author(s):  
Linlin Zhuang ◽  
Jiansen Gong ◽  
Ming Ma ◽  
Yongxin Ji ◽  
Peilong Tian ◽  
...  

The novel coronavirus disease 2019 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been surging rapidly around the world, which exposes humanity to unprecedented economic, social and...

2020 ◽  
Vol 12 (2) ◽  
pp. 156-157
Author(s):  
Mohammad Mostafa Ansari Ramandi ◽  
Mohammadreza Baay ◽  
Nasim Naderi

The disaster due to the novel coronavirus disease 2019 (COVID-19) around the world has made investigators enthusiastic about working on different aspects of COVID-19. However, although the pandemic of COVID-19 has not yet ended, it seems that COVID-19 compared to the other coronavirus infections (the Middle East Respiratory Syndrome [MERS] and Severe Acute Respiratory Syndrome [SARS]) is more likely to target the heart. Comparing the previous presentations of the coronavirus family and the recent cardiovascular manifestations of COVID-19 can also help in predicting possible future challenges and taking measures to tackle these issues.


2021 ◽  
Vol 15 (03) ◽  
pp. 366-369
Author(s):  
Rooh Ullah ◽  
Muhammad Suleman Rana ◽  
Mehmood Qadir ◽  
Muhammad Usman ◽  
Niaz Ahmed

Pandemic of novel Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infections in China is now become global public health crisis. At present 87.64% of the world is infected by this deadly illness. The risk from this epidemic depends on the nature of the virus, including how well it transmits from person to person, and the complications resulting from this current illness. The novel coronavirus has killed thousands of people in China and other countries as well; its rate of mortality is increasing day by day. There is an urgent need to control the virus by developing vaccine or any other antiviral drugs to save the world from this deadly viral infection.


2020 ◽  
Vol 9 (3) ◽  
pp. 164-171 ◽  
Author(s):  
Xiaoting Pei ◽  
Xinwei Jiao ◽  
Dingli Lu ◽  
Di Qi ◽  
Shenzhen Huang ◽  
...  

Background: The novel coronavirus pneumonia has attracted considerable attention from the international community. With the spread of outbreaks around the world, the WHO characterized COVID-19 as a pandemic. Methods: Relevant studies in PubMed were searched from January 1, 2020 to April 12, 2020, using the following search strategy: (“novel coronavirus pneumonia” OR “severe acute respiratory syndrome coronavirus 2” OR “coronavirus disease 2019” OR “COVID-19” OR “novel coronavirus pneumonia”) AND (“ophthalmology” OR “ophthalmologist” OR “eye” OR “conjunctiva” OR “conjunctivitis” OR “corneal” OR “keratitis”). Results: SARS-CoV-2 can spread through aerosol and is detected in tears of patients with COVID-19 infection. Notably, some infected patients had conjunctivitis, and conjunctivitis was the first symptom in some patients later diagnosed to have COVID-19 infection. This would increase the risk for ophthalmologists through inpatient consultations or regular clinical practice. When dealing with seemingly regular ophthalmic patients, the vigilance of ophthalmologists and associated staff tends to be reduced. Conclusion: Ophthalmologists must continuously update their knowledge regarding COVID-19 and take effective measures to prevent COVID-19 transmission.


2021 ◽  
Vol 7 (6) ◽  
Author(s):  
Nouar Qutob ◽  
Zaidoun Salah ◽  
Damien Richard ◽  
Hisham Darwish ◽  
Husam Sallam ◽  
...  

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the novel coronavirus responsible for the COVID-19 pandemic, continues to cause a significant public-health burden and disruption globally. Genomic epidemiology approaches point to most countries in the world having experienced many independent introductions of SARS-CoV-2 during the early stages of the pandemic. However, this situation may change with local lockdown policies and restrictions on travel, leading to the emergence of more geographically structured viral populations and lineages transmitting locally. Here, we report the first SARS-CoV-2 genomes from Palestine sampled from early March 2020, when the first cases were observed, through to August of 2020. SARS-CoV-2 genomes from Palestine fall across the diversity of the global phylogeny, consistent with at least nine independent introductions into the region. We identify one locally predominant lineage in circulation represented by 50 Palestinian SARS-CoV-2, grouping with genomes generated from Israel and the UK. We estimate the age of introduction of this lineage to 05/02/2020 (16/01/2020–19/02/2020), suggesting SARS-CoV-2 was already in circulation in Palestine predating its first detection in Bethlehem in early March. Our work highlights the value of ongoing genomic surveillance and monitoring to reconstruct the epidemiology of COVID-19 at both local and global scales.


2020 ◽  
Vol 10 ◽  
Author(s):  
Evert Smith

As a response to the viral pneumonias and severe illnesses that were emerging in patients, an ophthalmologist November 2019 a novel coronavirus emerged in Wuhan, Hubei, China Dr Li Wenliang, working at Wuhan Central Hospital, voiced his concerns only to be severely admonished by the authorities. The accelerated spread of the Severe Acute Respiratory Syndrome (SARS) in Wuhan, and then globally, as a result of the novel coronavirus was acute and pronounced. China alerted the World Health Organisation to several pneumonia cases at the end of December 2019 and the first death was recorded in early January 2020. The respiratory physician Dr Nanshan Zhong, announced human-to-human spread and a few days later on the 23 January 2020, Wuhan was placed under quarantine. The virus spread outside China and the WHO declared the outbreak a global health emergency on 30 January 2020. Tragically Dr Li Wenliang died on 7 February 2020 as a result of exposure to the virus, leaving a five-year-old son and a pregnant wife.


2020 ◽  
Vol 23 (7) ◽  
pp. 503-504 ◽  
Author(s):  
Mohammadreza Ghadir ◽  
Ali Ebrazeh ◽  
Javad Khodadadi ◽  
Masumeh Zamanlu ◽  
Saeed Shams ◽  
...  

The novel coronavirus, formerly named as 2019 novel coronavirus (2019-nCov) caused a rapidly spreading epidemic of severe acute respiratory syndrome (SARS) in Wuhan, China and thereafter, progressed globally to form a pandemic of coronavirus disease 2019 (COVID-19) in numerous countries; and now confirmed cases are reported from several provinces of Iran. Now various medical centers, clinicians and researchers around the world share their data and experiences about COVID-19 in order to participate in the global attempt of controlling the pandemic. The current report investigates the clinical presentations and paraclinical findings of the first confirmed cases and mortalities in the initiation of the outbreak of COVID-19 in Iran.


Author(s):  
Hemant Bherwani ◽  
Ankit Gupta ◽  
Saima Anjum ◽  
Avneesh Anshul ◽  
Rakesh Kumar

Abstract The pandemic of “Corona Virus Disease 2019” or COVID-19 has taken the world by storm. Majority of nations of the world have been challenged by the novel coronavirus, which is supposedly of zoonotic origin and is known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The present work attempts to evaluate the spread of COVID-19 in India. The methodology of assessment uses SEIR (Susceptible-Exposed-Infectious-Removed) model to establish the impact of socio-behavioural aspect, especially social distancing, affecting the numbers of COVID-19 cases per day. The lockdown initiated by Government of India (GoI) scenario is weighed against a scenario with a possible initiation of community spread due to crowded gatherings in India. The resultant changes, as against the lockdown scenario, has been reported in terms of the increase in the number of cases and stretch of the timeline to mitigate the COVID-19 spread. Impact of environmental factors like temperature and relative humidity have also been analyzed using statistical methods, including Response Surface Methodology (RSM) and Correlation. It has been found that the spread of cases is dependent on environmental conditions, i.e. temperature and relative humidity. This study is expected to help the policymakers and stakeholders to device an improved action plan to alleviate the COVID-19 spread, especially in India.


2021 ◽  
Vol 11 (1) ◽  
pp. 01-18
Author(s):  
Shweta Jain ◽  
◽  
Pankaj Kumar Jain ◽  
Ramakant Yadav ◽  
Surendra Kumar Jain ◽  
...  

The sudden outbreak of 2019 novel coronavirus (2019-nCoV) caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) originated from Wuhan, China. SARS-CoV-2 causes severe respiratory illness and becomes a major threat for humanity. Recently the entire scientist, researchers and physicians all over the countries focused to find the treatment of this pandemic disease. Numerous drugs and or vaccines have been trialed for prevention and treatment against 2019-nCoV but no therapy has been shown effective to date. Currently, numerous vaccines are under clinical investigation and mRNA-1273 vaccine (LNP- encapsulated mRNA vaccine encoding S protein) from Moderna is ahead. Although chloroquine, hydroxychloroquine, remdesivir and many other drugs had recommended against SARS-CoV-2, but still they are not the guarantee treatment of COVID-19. Recently, India, America, Russia and China introduced vaccines against COVID-19 in the market, however assurance of their 100% effectiveness are doubtful. The speed of daily new cases threatens the world and urges the scientist to crack this pandemic condition. KEYWORDS: 2019-nCoV; Chloroquine; COVID-19; Moderna; Respiratory disease; Remdesivir.


Author(s):  
Parinaz Tabari ◽  
Mitra Amini ◽  
Mohsen Moghadami ◽  
Mahsa Moosavi

The outbreak of Coronavirus disease 2019 (COVID-19) has posed a significant concern in many countries due to the rapid rate of transmission between humans. Taking advantage of the experience of the last epidemics in 2002 Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) and 2012 Middle East Respiratory Syndrome Coronavirus (MERS-CoV), some regions of the world were well- prepared for the new outbreak. However, other countries needed to be adapted to the situation promptly. Many management strategies were established, and some restrictions were introduced in some regions. In this review, we aimed to determine countries’ public responses to the epidemic of COVID-19 and how they developed administrative approaches towards the outbreak.


Author(s):  
Ranjit Barua ◽  
Sudipto Datta ◽  
Amit Roychowdhury ◽  
Pallab Datta

Epidemiology is the technique used to detect the origins of health outcomes and diseases in inhabitants. In epidemiology, the patient, the individual, and community are viewed mutually. Epidemiology is not only the analysis of health in inhabitants; it also includes applying the information enlarged by the analysis of public-based practice. In case of medicine, the practice of epidemiology is both an art and science. Currently, COVID-19 has spread all around the world. It is basically a severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Through the binding of receptor in gene region of its spike protein, ACE2 is bounded by corona virus. In this chapter, the authors summarized the epidemiological characteristics, clinical features, diagnosis, and treatment prognosis of COVID-19. A complete consideration will help to control the disease.


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