scholarly journals SARS-CoV-2 Viral Shedding and Transmission Dynamics: Implications of WHO COVID-19 Discharge Guidelines

2021 ◽  
Vol 8 ◽  
Author(s):  
Kingsley Badu ◽  
Kolapo Oyebola ◽  
Julien Z. B. Zahouli ◽  
Adeniyi Francis Fagbamigbe ◽  
Dziedzom K. de Souza ◽  
...  

The evolving nature of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has necessitated periodic revisions of COVID-19 patient treatment and discharge guidelines. Since the identification of the first COVID-19 cases in November 2019, the World Health Organization (WHO) has played a crucial role in tackling the country-level pandemic preparedness and patient management protocols. Among others, the WHO provided a guideline on the clinical management of COVID-19 patients according to which patients can be released from isolation centers on the 10th day following clinical symptom manifestation, with a minimum of 72 additional hours following the resolution of symptoms. However, emerging direct evidence indicating the possibility of viral shedding 14 days after the onset of symptoms called for evaluation of the current WHO discharge recommendations. In this review article, we carried out comprehensive literature analysis of viral shedding with specific focus on the duration of viral shedding and infectivity in asymptomatic and symptomatic (mild, moderate, and severe forms) COVID-19 patients. Our literature search indicates that even though, there are specific instances where the current protocols may not be applicable ( such as in immune-compromised patients there is no strong evidence to contradict the current WHO discharge criteria.

Coronaviruses ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Gaurav M. Doshi ◽  
Hemen S. Ved ◽  
Ami P. Thakkar

The World Health Organization (WHO) has recently announced the spread of novel coronavirus (nCoV) globally and has declared it a pandemic. The probable source of transmission of the virus, which is from animal to human and human to human contact, has been established. As per the statistics reported by the WHO on 11th April 2020, data has shown that more than sixteen lakh confirmed cases have been identified globally. The reported cases related to nCoV in India have been rising substantially. The review article discusses the characteristics of nCoV in detail with the probability of potentially effective old drugs that may inhibit the virus. The research may further emphasize and draw the attention of the world towards the development of an effective vaccine as well as alternative therapies. Moreover, the article will help to bridge the gap between the new researchers since it’s the current thrust area of research.


2021 ◽  
Vol 10 (1) ◽  
pp. 36-41
Author(s):  
Seyed Hesamaddin Banihashemi ◽  
Ahmadreza Karimi ◽  
Hasti Nikourazm ◽  
Behnaz Bahmanyar ◽  
Dariush Hooshyar

The severe acute respiratory syndrome coronavirus 2 virus and its associated disease, called coronavirus disease 2019 (COVID-19), first appeared in Wuhan, China in December 2019 and quickly spread around the world. Coronavirus was officially named COVID-19 by the World Health Organization and was recognized as a pandemic due to its rapid spread worldwide. Based on the published data, it is hoped to provide a source for later studies and to help prevent and control the contagious COVID-19 and its characteristics, and considerations that surgeons and medical staff must observe during the epidemic.


Biomedicines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1581
Author(s):  
Rodney R. Dietert

The is a sequential article to an initial review suggesting that Microbiome First medical approaches to human health and wellness could both aid the fight against noncommunicable diseases and conditions (NCDs) and help to usher in sustainable healthcare. This current review article specifically focuses on public health programs and initiatives and what has been termed by medical journals as a catastrophic record of recent failures. Included in the review is a discussion of the four priority behavioral modifications (food choices, cessation of two drugs of abuse, and exercise) advocated by the World Health Organization as the way to stop the ongoing NCD epidemic. The lack of public health focus on the majority of cells and genes in the human superorganism, the microbiome, is highlighted as is the “regulatory gap” failure to protect humans, particularly the young, from a series of mass population toxic exposures (e.g., asbestos, trichloroethylene, dioxin, polychlorinated biphenyls, triclosan, bisphenol A and other plasticizers, polyfluorinated compounds, herbicides, food emulsifiers, high fructose corn syrup, certain nanoparticles, endocrine disruptors, and obesogens). The combination of early life toxicity for the microbiome and connected human physiological systems (e.g., immune, neurological), plus a lack of attention to the importance of microbial rebiosis has facilitated rather than suppressed, the NCD epidemic. This review article concludes with a call to place the microbiome first and foremost in public health initiatives as a way to both rescue public health effectiveness and reduce the human suffering connected to comorbid NCDs.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Joshua L. Santarpia ◽  
Danielle N. Rivera ◽  
Vicki L. Herrera ◽  
M. Jane Morwitzer ◽  
Hannah M. Creager ◽  
...  

Abstract The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) originated in Wuhan, China in late 2019, and its resulting coronavirus disease, COVID-19, was declared a pandemic by the World Health Organization on March 11, 2020. The rapid global spread of COVID-19 represents perhaps the most significant public health emergency in a century. As the pandemic progressed, a continued paucity of evidence on routes of SARS-CoV-2 transmission has resulted in shifting infection prevention and control guidelines between classically-defined airborne and droplet precautions. During the initial isolation of 13 individuals with COVID-19 at the University of Nebraska Medical Center, we collected air and surface samples to examine viral shedding from isolated individuals. We detected viral contamination among all samples, supporting the use of airborne isolation precautions when caring for COVID-19 patients.


2002 ◽  
Vol 81 (1) ◽  
pp. 40-43 ◽  
Author(s):  
Jeremy C. Cuzzourt ◽  
John C. Pezold ◽  
C. Warren Dunn

Neuroendocrine neoplasms of the larynx comprise a rare group of tumors that have a controversial history with regard to their classification. The World Health Organization categorizes these tumors as typical carcinoids, atypical carcinoids, small-cell neuroendocrine carcinomas, and paragangliomas. A typical carcinoids and small-cell neuroendocrine carcinomas are the more common. Only 13 cases of typical carcinoid have been reported. Local excision is sufficient for typical carcinoids and paragangliomas, but atypical carcinoids require neck dissection because of their tendency to metastasize. Small-cell neuroendocrine carcinomas are not cured by local excision, and these patients have the worst prognosis (5-year survival: 5%); their treatment is limited to chemo- and radiotherapy. Because of these variations in tumor behavior and treatment, it is essential that otolaryngologists and pathologists be able to correctly identify the specific type of tumor in order to optimize patient treatment and survival. We report a case of typical carcinoid and review the pertinent literature on this subject.


2021 ◽  
Vol 54 ◽  
Author(s):  
Abigail F. Melicor ◽  
Katrina Loren R. Rey ◽  
Leonila F. Dans

KEY FINDINGSAsymptomatic and pre-symptomatic transmission of SARS-CoV-2 may occur.• Manifestations of COVID-19 are highly varied and may include asymptomatic cases, who do not manifest with anysigns and symptoms despite testing positive for COVID-19 by viral nucleic acid tests. Pre-symptomatic cases areinfected individuals who are still in their incubation period, hence do not exhibit any symptoms yet but eventuallydevelop symptoms.• As of June 2020, only 586 (2.8%) of the 20,990 active cases in the Philippines were classified as asymptomatic,but it is unclear whether cases are pre-symptomatic or carriers (true asymptomatic).• Based on 36 observational studies (case reports, case series, cross-sectional and cohort studies) and 9 statisticalmodeling analysis, asymptomatic and pre-symptomatic transmission of SARS-CoV-2 may occur. However, 3studies reported no transmission from pre-symptomatic and asymptomatic cases.• Studies on viral load comparing symptomatic cases with pre-symptomatic and asymptomatic cases reportedcontradicting results. The duration of viral shedding was significantly longer for symptomatic patients comparedto asymptomatic patients but similar for asymptomatic and pre-symptomatic patients.• Therewas no difference in the transmission rates of symptomatic and asymptomatic cases. However,the estimatedinfectivity and probability of transmission was higherfor symptomatic cases compared to asymptomatic cases, butresults were imprecise due to a wide confidence interval.• The World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) recognize thepossibility of pre-symptomatic and asymptomatic transmission. According to WHO, current evidence suggestsasymptomatic cases are less likely to transmit the virus than symptomatic cases.


Crisis ◽  
2005 ◽  
Vol 26 (3) ◽  
pp. 104-111 ◽  
Author(s):  
Lakshmi Vijayakumar ◽  
K. Nagaraj ◽  
Jane Pirkis ◽  
Harvey Whiteford

Abstract. Objective. Suicide is a global public health problem, but relatively little epidemiological investigation of the phenomenon has occurred in developing countries. This paper aims to (1) examine the availability of rate data in developing countries, (2) provide a description of the frequency and distribution of suicide in those countries for which data are available, and (3) explore the relationship between country-level socioeconomic factors and suicide rates. It is accompanied by two companion papers that consider risk factors and preventive efforts associated with suicide in developing countries, respectively. Method. Using World Health Organization data, we calculated the average annual male, female, and total suicide rates during the 1990s for individual countries and regions (classified according to the Human Development Index [HDI]), and examined the association between a range of socioeconomic indicators and suicide rates. Results. For reasons of data availability, we concentrated on medium HDI countries. Suicide rates in these countries were variable. They were generally comparable with those in high HDI countries from the same region, with some exceptions. High education levels, high telephone density, and high per capita levels of cigarette consumption were associated with high suicide rates; high levels of inequality were associated with low suicide rates. Conclusion. Epidemiological investigations of this kind have the potential to inform suicide prevention efforts in developing countries, and should be encouraged.


10.3823/0803 ◽  
2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Asem A. Shehabi ◽  
Monzer Hamze

Sexually transmitted infections (STIs) are caused by a wide spectrum of bacteria, viruses and parasites. These agents can be easily transmitted during any direct genital or oral sexual contact. Recently, World Health Organization (WHO), reported that more than 1 million STIs  are acquired every day worldwide,  Each year, there are an estimated 357 million new infections with 1 of 4 STIs: chlamydia, gonorrhoea, syphilis and trichomoniasis. There are few studies and official reports published on the prevalence of STIs in most Arab countries. However, few new recent studies showed increased prevalence of certain STIs in some Arab countries.


2020 ◽  
Author(s):  
SHASHANK KUMAR MAURYA ◽  
Amit Bhattacharya ◽  
Pooja Shukla ◽  
RAJNIKANT MISHRA

COVID-19, SARS-CoV-2 virus of the coronavirus family, created worldwide infectious outbreak affecting millions of people across the globe showing mild to severe symptoms of pneumonia and acute respiratory distress. Absence of precise information on primary transmission, diagnosis, prognosis, and therapeutics for patients with COVID-19 makes prevention and control tough. Treatment of millions of COVID19 patients without any specific drug is one of the biggest challenge, many existing antiviral drugs are in use as an alternative treatment and hunting is still on the way to develop COVID19 specific drug and vaccine. Being the world second largest populated country, fluctuating climatic condition at every 4 months, India is also at the high risk for spread of COVID19 infection. This review article has been intended to discuss biology of COVID-19, mechanism of COVID-19 infection in humans, epidemiology, possible effect of COVID19 infection on pregnancy, nervous system, individuals diabetes and cardiovascular disease, drug repurposing strategy as an alternative line of treatment and clinical practices recommended by World Health Organization (WHO) and other government agencies followed by situation and measures taken by Indian government to minimize the spread of COVID19 in India.


2021 ◽  
Vol 10 (15) ◽  
pp. e281101423014
Author(s):  
I Wayan Sumardika ◽  
Cokorda Agung Wahyu Purnamasidhi ◽  
Agus Eka Darwinata ◽  
Giovanca Verentzia Purnama ◽  
Jerry Jerry ◽  
...  

An unknown pneumonia-like disease has emerged in Wuhan, China, in late 2019. It is later named as SARS-CoV-2 which cause COVID-19. This virus spreads easily due to high mobilization and its transmission through droplets or aerosol and fomite. The World Health Organization (WHO) then declared this disease as a global outbreak in March 2020. As the world faces the outbreak of SARS-CoV-2, many researchers race to find the most efficacious treatment for COVID-19. Until now, the most common treatments for COVID-19 were only symptomatic such as decongestant, corticosteroid, interleukin inhibitor, and existing antiviral. The researchers then develop a brand new antiviral that works efficiently to inhibit SARS-CoV-2 and might become prophylaxis. This disease is called Molnupiravir or EIDD-2801, a nucleotide analog which inhibits SARS-CoV-2 replication, resulting in damaged mRNA and lethal virions. Molnupiravir works to produce mutagenesis in RNA viruses and prevent the virus from spreading widely throughout the human body. However, this drug is still needed to undergo clinical trial phase three. In this article, we will discuss how Molnupiravir works and its efficacy compared to existing drugs. This review article aims to provide an update about novel efficacious antiviral for COVID-19, Molnupiravir.


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