PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

SARS-CoV-2 transmission from people without COVID-19 symptoms

2021-01-07
(Press-News.org) What The Study Did: Under a range of assumptions of presymptomatic transmission and transmission from individuals with infection who never develop symptoms, the model presented here estimated that more than half of transmission comes from asymptomatic individuals.

Author: Jay C. Butler, M.D., of the U.S. Centers for Disease Control and Prevention in Atlanta, is the corresponding author.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2020.35057)

Editor's Note: The article includes funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

INFORMATION:

Media advisory: The full study is linked to this news release.

Embed this link to provide your readers free access to the full-text article This link will be live at the embargo time http://jamanetwork.com/journals/jamanetworkopen/fullarticle/10.1001/jamanetworkopen.2020.35057?utm_source=For_The_Media&utm_medium=referral&utm_campaign=ftm_links&utm_term=010721

About JAMA Network Open: JAMA Network Open is the new online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.



ELSE PRESS RELEASES FROM THIS DATE:

Examining association of age, household dysfunction, outcomes in early adulthood

2021-01-07
What The Study Did: Population data from Denmark were used to examine whether age at exposure to negative experiences in childhood and adolescence (parents' unemployment, incarceration, mental disorders, death and divorce, and the child's foster care experiences) was associated with outcomes in early adulthood. Author: Signe Hald Andersen, Ph.D., of the Rockwool Foundation Research Unit in Copenhagen, Denmark, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2020.32769) Editor's Note: The article includes funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, ...

Adapting to COVID-19 with outdoor intraocular pressure monitoring

2021-01-07
What The Study Did: To adapt to broader public health initiatives around COVID-19, researchers developed a drive-through intraocular pressure (IOP) screening clinic to minimize COVID-19 exposure for patients and clinicians by measuring eye pressure in the unconventional setting of a clinic parking lot. Authors: Miel Sundararajan, M.D., of the University of California, San Francisco, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/  (doi:10.1001/jamaophthalmol.2020.6073) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article ...

Speech recognition changes after cochlear implant

2021-01-07
What The Study Did: Researchers compared changes in preoperative aided speech recognition with postoperative speech recognition among individuals who received cochlear implants. Authors: Theodore R. McRackan, M.D., M.S.C.R., of the Medical University of South Carolina in Charleston, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/  (doi:10.1001/jamaoto.2020.5094) Editor's Note: The article includes conflicts of interest and funding/support disclosures. Please ...

Virtual care at cancer center during COVID-19

2021-01-07
What The Study Did: The outcomes of a cancer center-wide virtual care program launched in response to the COVID-19 pandemic were examined in this study. Authors: Alejandro Berlin, M.D., M.Sc., of the Princess Margaret Cancer Centre in Toronto, Ontario, Canada, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamaoncol.2020.6982) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflict ...

Assessment of duplicate evidence in systematic reviews of imaging findings of children with COVID-19

2021-01-07
What The Study Did:This cross-sectional study maps a coronavirus research question to illustrate the overlap and shortcomings of the evidence syntheses in this area. Author: Giordano Pérez-Gaxiola, M.D., M.Sc., of Sinaloa Pediatric Hospital's Cochrane Associate Centre in Culiacan, Mexico, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2020.32769) Editor's Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support. INFORMATION: Media advisory: ...

Mount Sinai researchers identify and characterize 3 molecular subtypes of Alzheimer's

2021-01-07
(New York, NY - January 6, 2021) - Researchers at the Icahn School of Medicine at Mount Sinai have identified three major molecular subtypes of Alzheimer's disease (AD) using data from RNA sequencing. The study advances our understanding of the mechanisms of AD and could pave the way for developing novel, personalized therapeutics. The work was funded by the National Institute on Aging, part of the National Institutes of Health (NIH), and published in Science Advances on January 6, 2021. RNA is a genetic molecule similar to DNA that encodes the instructions for making proteins. RNA sequencing is a technology that reveals the presence and quantity of RNA in a biological sample such as a brain slice. Alzheimer's ...

Unusual sex chromosomes of platypus, emu and duck

Unusual sex chromosomes of platypus, emu and duck
2021-01-07
Sex chromosomes are presumed to originate from a pair of identical ancestral chromosomes by acquiring a male- or a female-determining gene on one chromosome. To prevent the sex-determining gene from appearing in the opposite sex, recombination is suppressed on sex chromosomes. This leads to the degeneration of Y chromosome (or the W chromosome in case of birds) and the morphological difference of sex chromosomes between sexes. For example, the human Y chromosome bears only less than 50 genes, while the human X chromosome still maintains over 1500 genes from the autosomal ancestor. This process occurred independently in birds, in ...

High-flux table-top source for femtosecond hard X-ray pulses

High-flux table-top source for femtosecond hard X-ray pulses
2021-01-07
Femtosecond hard X-ray pulses are an important tool for unraveling structure changes of condensed matter on atomic length and time scales. A novel laser-driven X-ray source provides femtosecond copper Kα pulses at a 1 kHz repetition rate with an unprecedented flux of some 10^12 X-ray photons per second. Elementary processes in physics, chemistry, and biology are connected with changes of the atomic or molecular structure on a femtosecond time scale (1 femtosecond (fs) = 10^-15 seconds). Ultrafast X-ray methods hold strong potential for following structure changes in space and time and generate 'movies' of the motions of electrons, atoms and molecules. This perspective has ...

How to mitigate the impact of a lockdown on mental health

2021-01-07
The Covid-19 pandemic is impacting people's mental health. But what helps and hinders people in getting through a lockdown? A new study led by researchers at the University of Basel addressed this question using data from 78 countries across the world. The results hint at the pivots and hinges on which the individual's psyche rests in the pandemic. At the outset of the Covid-19 pandemic, little was known about the impact of population-wide governmental lockdowns. What was known was taken from restricted quarantines of small groups of people. "On the one hand, such drastic changes to daily routines can be detrimental to mental health," explains Professor ...

New challenges for wolf conservation

2021-01-07
People view the wolf as either a threatening predator or a sign of a healthy natural habitat. Many proponents of nature and animal conservation welcome the spread of wolf populations in Germany. By contrast, farmers who graze herds directly impacted by the wolves' return are more critical. The team of Nicolas Schoof, Prof. Dr. Albert Reif of the Chair of Site Classification and Vegetation Science at the University of Freiburg, and Prof. Dr. Eckhard Jedicke of the Competence Center Cultural Landscape and the Department of Landscape Planning and Nature Conservation of Hochschule Geisenheim University has assessed the existing legal situation. On the basis of a range of environmental data they have determined the conflicts and drawn up possible solutions. In an article in ...

LAST 30 PRESS RELEASES:

Efforts to reduce kids' screen time weakened by unequal access to green space

Study reveals rising interest in permanent contraception after Roe v. Wade was overturned

U of M Medical School study finds point-of-care ultrasound enhances early pregnancy care, cuts emergency visits by 81%

Ice patches on Beartooth Plateau reveal how ancient landscape differed from today’s

MMRI scientist publishes breakthrough study detailing how ketones improves blood flow to the heart

2025 Seismological Society of America Annual Meeting

New AI tool uses routine blood tests to predict immunotherapy response for many cancers

1 in 4 U.S. veterans aged 60+ report having being diagnosed with cardiovascular disease at some point, with potential implications for their physical and mental health

These 11 genes may help us better understand forever chemicals’ effects on the brain

Microplastics widespread in seafood people eat

Lead pollution likely caused widespread IQ declines in ancient Rome, new study finds

Researchers reveal ancient dietary habits and early human use of plant foods

NRG Oncology adds new theranostics subcommittee to organization, new leadership members for CCDR and early phase trial oversight committees

New NEJM Perspective article highlights urgent need for widespread adoption of Fracture Liaison Services (FLS) to combat rising burden of osteoporosis-related fractures

Hornwort genomes provide clues on how plants conquered the land

New mechanism discovered that triggers immune response in cells with damaged DNA

Model proposed for treating loneliness in borderline personality disorder

Marco Demaria named editor-in-chief of Aging (Aging-US)

A healthy diet is key to a healthy gut microbiome

New study links millions of diabetes and heart disease cases globally to sugary drinks

Fluoride exposure and children’s IQ scores

Trends in treatment need and receipt for substance use disorders in the US

Gender-affirming medications rarely prescribed to US adolescents

Burden of infections in early life and risk of infections and systemic antibiotics use in childhood

New study shows plummeting STIs with doxyPEP use

Newly discovered 'kiss and capture' mechanism explains the formation of Pluto and its largest moon

New method tracks the 'learning curve' of AI to decode complex genomic data

Nutrient enrichment: an emerging threat to tropical forests

Scientists identify low-cost adsorbents for removing impurities from landfill gas

CDC grant funds initiatives for breast cancer patients

[Press-News.org] SARS-CoV-2 transmission from people without COVID-19 symptoms