Category: <span>Uncategorized</span>

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Will lockdowns stop COVID-19 pandemic?

A recent study leaded by Johan Giesecke (Swedish top epidemiologist), from Karolinska Institute in Stockholm (Sweden), points to lockdowns are not the way to stop COVID-19 pandemic. Many countries (and members of their press media) have marvelled at Sweden’s relaxed strategy in the face of the COVID-19 pandemic: schools and most workplaces have remained open,...

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Nicotine could protect from COVID-19

Nicotine could protect against the COVID-19 virus, especially in more severe cases, by attenuating the body’s excessive immune reaction known as cytokine storm ―the uncontrolled response that leads to the release of a flood of substances called cytokines that, in excess, can result in damage to multiple organs―. This hypothesis, which was already pointed out...

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Antibody tests find little immunity against COVID-19

The first studies carried out in the world to evaluate what part of the population has antibodies against the COVID-19 coronavirus have detected less immunity than expected, the World Health Organization (WHO) has warned. If this still preliminary result is confirmed in other studies that are currently underway, it would remove the prospect that the...

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Evidence of stray dogs as possible origin of COVID-19 pandemic

Since the COVID-19 was first detected, virologists work against the clock to complete the full history of SARS-CoV-2. It is a crucial detective job not only when developing a vaccine, but also to prevent future infections. That task is to examine the genetic sequence of SARS-CoV-2 and compare it to that of other known coronavirus...

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Clinical manifestations of children with COVID-19

Elderly patients infected with SARS-CoV-2 are at high risk to have Severe Acute Respiratory Syndrome (SARS), complications and death. Due to unknown reasons, children with COVID-19 appear to have a milder clinical course compared to adults, and reports of death are scarce. However, pediatric population may play a major role in community spread of SARS-CoV-2....

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Non-specific primers reveal false-negative risk in detection of COVID-19 infections

As an easy and rapid method to diagnose coronavirus virus, including SARS-CoV-2, SARS and so on, Reverse Transcription Polymerase Chain Reaction (RT-PCR) was commonly used to confirm COVID-19 infections worldwide. Some institutes or universities provided several RT-PCR assays to diagnose 2019-nCoV (previous name of COVID-19) and the protocols. Because of occurrence of abnormal results, several...

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Level of IL-6 predicts respiratory failure in hospitalized symptomatic COVID-19 patients

The pandemic Coronavirus-disease 19 (COVID-19) is characterized by a heterogeneous clinical course. While most patients experience only mild symptoms, a relevant proportion develop severe disease progression with increasing hypoxia up to acute respiratory distress syndrome. The substantial number of patients with severe disease have strained intensive care capacities to an unprecedented level. In this way,...

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The role of vitamin D in suppressing cytokine storm in COVID-19 patients

A study has reviewed the roles of vitamin D in reducing the risk of respiratory tract infections, knowledge about the epidemiology of influenza and COVID-19, and how vitamin D supplementation might be a useful measure to reduce risk. Through several mechanisms, vitamin D can reduce risk of infections. Those mechanisms include inducing cathelicidins and defensins...

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COVID-19 may be transmitted through the eye, report finds

A new report published by JAMA Ophthalmology found preliminary data may suggest SARS-CoV-2, the virus that causes COVID-19, might be transmitted through the eye. Researchers analyzed data from 38 patients infected with COVID-19 from Hubei Province, China, and found 12 (31.6%) individuals had ocular manifestations, including epiphora, conjunctival congestion, or chemosis. These symptoms commonly occur...

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Effects of temperature on COVID-19 transmission

When the SARS outbreak happened in 2002-2003, SARS-CoV spread to approximately 30 countries only. However, the current outbreak of COVID-19 by SARS-CoV-2 has spread to 176 countries or territories which suggests the enhanced ability of viruses to be aerosolized. Environmental factors such as atmospheric temperature also can modulate the survival and spread of virus aerosols...