Respiratory News and Research

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SARS-CoV-2 viroporin triggers NLRP3 inflammasome causing a severe inflammatory response

Now, a team of researchers at the University of Florida report that the SARS-CoV-2 viroporin triggers the NLR Family Pyrin Domain Containing 3 (NLRP3) inflammasome, which is responsible for the inflammatory pathology in severely ill COVID-19 patients.

30 Oct 2020

Symptoms and outcomes of 3.32 million people tested for SARS-CoV-2

A recent study published on the preprint server medRxiv* in October 2020 shows the need for large-scale studies on the clinical characteristics and outcomes of COVID-19 at the national and international scale. This is essential to shape interventions and optimize the use of resources to contain and manage a second wave of the pandemic.

30 Oct 2020

SARS-CoV-2 load varies widely in the community and over time

A new study published on the preprint server medRxiv* in October 2020 reports that there are large differences in the viral load in different communities. Moreover, the authors say that the cycle threshold values required to obtain a positive result for viral RNA by polymerase chain reaction may provide an early warning of an outbreak.

29 Oct 2020

Model includes spatial heterogeneity to analyze airborne disease spread

Researchers from the University of Copenhagen have included parameters that consider a spatially heterogeneous population for transmission in a new model for airborne disease transmission. This allows for estimating superspreaders and appropriate mitigation strategies.

29 Oct 2020

COVID-19 patients at risk of fatal co-infection during ICU stays

Researchers in the UK have conducted a study showing that a high proportion of patients admitted to intensive care units (ICU) with coronavirus disease 2019 (COVID-19) acquire a secondary bacterial co-infection during their hospital stay.

29 Oct 2020

App-based surveillance system enables early detection of COVID-19 hotspots

Researchers in the UK, United States, and Sweden have used large-scale self-reported app data to estimate coronavirus disease 2019 (COVID-19) incidence, prevalence, and effective reproductive number in England.

29 Oct 2020

Mental health challenges associated with COVID-19 lockdown in spring 2020

This brief is a summary of the policy brief prepared in the context of the Swiss national COVID-19 science task force (https://ncs-tf.ch/en/).

29 Oct 2020

Antiviral inhibitor DDX42 shows broad activity against Chikungunya, HIV and SARS-CoV-2

By exploiting type 1 interferon's ability to foster an antagonistic cellular environment for viral replication, a research group from France pinpointed DEAD-box RNA helicase DDX42 as an intrinsic inhibitor of HIV, but also other pathogenic viruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and Chikungunya virus.

29 Oct 2020

Remdesivir received FDA approval for treating COVID-19 patients: Benefits still not proven

The United States has become the epicenter of the world in the ever increasing pandemic of COVID-19. While public health prevention strategies of social distancing, crowd avoidance, masking and frequent hand washing are of proven benefit, effective drug therapies for treatment are sparse.

29 Oct 2020

Research shows why certain people infected with COVID-19 show no symptoms

Researchers worldwide have been surprised to see that individuals can be infected with the SARS-CoV-2 virus - the virus that produces COVID-19 - without showing symptoms. Since these individuals expose others to infection without knowing it, it is important to find an explanation and hopefully a solution to this.

29 Oct 2020

New dataset can help analyze multiple storms, track health outcomes

Hurricanes and other tropical cyclones can severely impact human health in communities across the country, but data for these events is limited, especially in a format that is easy to link with human health outcomes.

29 Oct 2020

Researchers estimate prevalence of SARS-CoV-2 antibodies among adults in orange county

Testing a representative sample of Orange County residents for a wide range of coronavirus antibodies, University of California, Irvine researchers found that 11.5 percent of them have antibodies for COVID-19, in contrast to previous estimates of less than 2 percent.

29 Oct 2020

Researchers observe a rapid drop in average body temperature in tropical human population

In the nearly two centuries since German physician Carl Wunderlich established 98.6°F as the standard "normal" body temperature, it has been used by parents and doctors alike as the measure by which fevers -- and often the severity of illness -- have been assessed.

29 Oct 2020

Mouth may be primary route of SARS-CoV-2 infection and transmission

A new study published on the preprint server medRxiv in October 2020 shows that the virus also multiplies robustly in the oral cavity, indicating that saliva plays a role in viral transmission.

29 Oct 2020

Travel surges before lockdown undermine the SARS-CoV-2 containment effort

Recently, researchers from the Harvard T.H. Chan School of Public Health, Boston; the University of Illinois at Urbana Champaign; and the University of California, USA, assessed the impact of the announcement and implementation of restrictions such as lockdowns on mobility patterns of humans.

28 Oct 2020

REACT study shows 26% decline in SARS CoV-2 seroprevalence over 2-3 months

Their study titled, "Declining prevalence of antibody positivity to SARS-CoV-2: a community study of 365,000 adults," was released online as a pre-print on the medRxiv* server. This large study was funded by the Department of Health and Social Care in England.

28 Oct 2020

COVID-19 mortality rate declines significantly in Sweden

A new observational study by Swedish researchers shows a significant decline in death rates among hospitalized patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Their study titled, "Decline in mortality among hospitalized covid-19 patients in Sweden: a nationwide observational study," was released online as a preprint on the medRxiv* server.

28 Oct 2020

Genome-wide CRISPR screens reveal resistance and sensitization mechanisms of drugs used in COVID-19

By leveraging nucleotide triphosphate analog-induced cell death, Chinese researchers unveiled genes that affect the import, export, and metabolism of pervasively used antiviral drugs in the treatment of coronavirus disease (COVID-19). This exciting study is currently available on the bioRxiv* preprint server.

28 Oct 2020

Study: Nearly 17% of recovered COVID-19 patients could still carry the virus

A new study in the American Journal of Preventive Medicine, published by Elsevier, presents new data that address important questions pertaining to the containment of the coronavirus pandemic: When should COVID-19 quarantine really end and which continuing symptoms may be more indicative of a positive test in recovered patients?

28 Oct 2020

Genomic analysis of early SARS-CoV-2 epidemic in the UK

By analyzing 50,887 SARS-CoV-2 genomes, the team has provided insights into the micro-epidemiological patterns underlying the features of one of the world's largest national COVID-19 epidemics.

28 Oct 2020