Sort   by:  
 Page size 
UnknownA Multi-Site Analysis of the Prevalence of Food Insecurity in the United States, before and during the COVID-19 Pandemic.

Background

The coronavirus disease 2019 (COVID-19) pandemic profoundly affected food systems including food security. Understanding how the COVID-19 pandemic impacted food security is important to provide support and identify long-term impacts and needs.

Objective

The National Food Ac...
S-EPMC8677520 | biostudies-literature
UnknownChanges in symptomatology, reinfection, and transmissibility associated with the SARS-CoV-2 variant B.1.1.7: an ecological study.

Background

The SARS-CoV-2 variant B.1.1.7 was first identified in December, 2020, in England. We aimed to investigate whether increases in the proportion of infections with this variant are associated with differences in symptoms or disease course, reinfection rates, or transmissibility.

...

S-EPMC8041365 | biostudies-literature
UnknownGenomic assessment of quarantine measures to prevent SARS-CoV-2 importation and transmission.
Mitigation of SARS-CoV-2 transmission from international travel is a priority. We evaluated the effectiveness of travellers being required to quarantine for 14-days on return to England in Summer 2020. We identified 4,207 travel-related SARS-CoV-2 cases and their contacts, and identified 827 associa...
S-EPMC8866425 | biostudies-literature
UnknownSARS-CoV-2 evolution during treatment of chronic infection.
The spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is critical for virus infection through the engagement of the human ACE2 protein1 and is a major antibody target. Here we show that chronic infection with SARS-CoV-2 leads to viral evolution and reduced sens...
S-EPMC7610568 | biostudies-literature
UnknownGenomic epidemiology of SARS-CoV-2 in a UK university identifies dynamics of transmission.
Understanding SARS-CoV-2 transmission in higher education settings is important to limit spread between students, and into at-risk populations. In this study, we sequenced 482 SARS-CoV-2 isolates from the University of Cambridge from 5 October to 6 December 2020. We perform a detailed phylogenetic c...
S-EPMC8826310 | biostudies-literature
UnknownRecurrent emergence of SARS-CoV-2 spike deletion H69/V70 and its role in the Alpha variant B.1.1.7.
We report severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike ΔH69/V70 in multiple independent lineages, often occurring after acquisition of receptor binding motif replacements such as N439K and Y453F, known to increase binding affinity to the ACE2 receptor and confer antibody escape...
S-EPMC8185188 | biostudies-literature
UnknownA randomized trial comparing intravitreal triamcinolone acetonide and focal/grid photocoagulation for diabetic macular edema.

Objective

To evaluate the efficacy and safety of 1-mg and 4-mg doses of preservative-free intravitreal triamcinolone in comparison with focal/grid photocoagulation for the treatment of diabetic macular edema (DME).

Design

Multicenter, randomized clinical trial.

Participants

Eig...
S-EPMC2748264 | biostudies-literature
UnknownRecombination Suppression Drives Expansion of the Drosophila Dot Chromosome.
Genome size varies widely, even among closely related species, yet much less is known about chromosome size variation. Here we use the fourth chromosome of Drosophila, also known as the "Muller F element" or "dot chromosome", as a model to investigate chromosome-specific size expansion. The F elemen...
S-EPMC12728734 | biostudies-literature
Sort   by:  
 Page size