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Tales of post-apocalyptic landscapes in which few survivors emerge into a new and much different world have long been popular tales woven by screenwriters and authors. While many enjoy these stories, thinking of them as nothing but a guilty pleasure, they may not realize that immersing themselves in fiction has prepared them for the reality of 2020, according to a team of researchers.

(St. Louis) - A new study by investigators at the Shriners Hospital for Children -- St. Louis suggests the damaging effects of obesity are not due to body weight but rather come from something much smaller - biochemical signals released by fat cells.

The study focuses on the link between overweight or obesity and the development of osteoarthritis, a painful disease of the joints. The investigation was led by Dr. Farshid Guilak, director of the St. Louis Shriners Hospital Research Center.

An analysis of a large nationally representative longitudinal study by University of California San Diego Herbert Wertheim School of Public Health and Human Longevity Science report that starting tobacco products, including e-cigarettes, before the age of 18 is a major risk factor for people becoming daily cigarette smokers.

Researchers have taken an important step forward in developing a controlled human infection model to test leishmaniasis vaccines.

The University of York-led study identified and characterised a new strain of Leishmania parasite that will form the basis of a new controlled human infection model for the disease which is transmitted by the bite of sand flies. The team then produced the parasite to the standards required for use in human clinical studies.

Marijuana use increases throughout the calendar year, with use up 13 percent on average at the end of each year (2015-2019) compared to the beginning, according to a new study published in the journal Drug and Alcohol Dependence.

BOSTON - Patients with tuberous sclerosis complex, a genetic disorder characterized by the growth of noncancerous tumors in multiple organs of the body, have limited treatment options. A team led by investigators at Massachusetts General Hospital (MGH) has now shown that gene therapy can effectively treat mice that express one of the mutated genes that cause the disease. The research is published in Science Advances.

What The Study Did: This study adapted a well-established tool for measuring inequity from economics--the Lorenz curve--to measure racial inequities in COVID-19 testing.

Author: Aaloke Mody, M.D., of the Washington University School of Medicine in St Louis, 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.2020.32696)

New Curtin University research has found a dramatic increase in people's trust in government in Australia and New Zealand as a result of the COVID pandemic.

Published in the Australian Journal of Public Administration, the team surveyed people in Australia and New Zealand in July 2020 and found confidence in public health scientists to also be high and for this trust to be manifested in higher usage of government COVID phone apps.

The SARS-CoV-2 virus was introduced to the United Kingdom well over 1,000 times in early 2020, according to researchers who analyzed more than 50,000 viral sequences from the first wave of the COVID-19 pandemic in the UK. The virus lineages introduced before the UK's national lockdown in March tended to be larger and more geographically dispersed. Infectious disease epidemics are composed of chains of transmission, yet little is known about how co-circulating transmission lineages vary in size, spatial distribution and persistence.

Announcing a new publication for BIO Integration journal. In this opinion article the authors Daiyun Xu, Yonghui Lü, Yongxiao Li, Shengbin Li, Zhe Wang and Junqing Wang from Sun Yat-Sen University, Guangzhou, China discuss ferroptosis resistance in cancer.

In a letter published in the December issue of the American Heart Association's medical journal Circulation a group of researchers at Vanderbilt University Medical Center (VUMC) dispute the most recent findings of the incidence of myocarditis in athletes with a history of COVID-19.

The Vanderbilt study, COVID-19 Myocardial Pathology Evaluation in AthleTEs with Cardiac Magnetic Resonance (COMPETE CMR), found a much lower degree of myocarditis in athletes than what was previously reported in other studies.

Across the world, health care workers and high-risk groups are beginning to receive COVID-19 vaccines, offering hope for a return to normalcy amidst the pandemic. However, the vaccines authorized for emergency use in the U.S. require two doses to be effective, which can create problems with logistics and compliance. Now, researchers reporting in ACS Central Science have developed a nanoparticle vaccine that elicits a virus-neutralizing antibody response in mice after only a single dose.

More than half of people who use medical marijuana products to ease pain also experience clusters of multiple withdrawal symptoms when they're between uses, a new study finds.

And about 10% of the patients taking part in the study experienced worsening changes to their sleep, mood, mental state, energy and appetite over the next two years as they continued to use cannabis.

PHILADELPHIA--Medications to treat high blood pressure did not affect outcomes among patients hospitalized with COVID-19, found an international team led by researchers in the Perelman School of Medicine at the University of Pennsylvania. The study, published today in The Lancet Respiratory Medicine, is the first randomized controlled trial to show there is no risk for patients continuing these medications while hospitalized for COVID-19.

Wuhan City in China was the first place to report COVID-19 in the world and--between December 2019 and May 2020--caused nearly two-thirds of all COVID-19 cases in China. Now, researchers reporting in PLOS Neglected Tropical Diseases have tested more than 60,000 healthy individuals in China for SARS-CoV-2 antibodies and concluded that thousands of Wuhan residents were infected with asymptomatic cases of COVID-19 after the infection was believed to be under control in China.