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Aroma diffuser and plastic bag offer inexpensive method to test fit of face masks at home

A team from the University of Cambridge has created an affordable solution for assessing the proper fit of N95 and similar sealing masks, utilizing a simple home aroma diffuser and large plastic bag. This setup can perform similarly to commercial qualitative fit-testing solutions without the high costs associated with them.

SourceUniversity of Cambridge·JournalDisaster Medicine and Public Health Preparedness·DateDec 16, 2020

The Lancet Infectious Diseases: Largest seroprevalence study in the region finds number of people infected with SARS-CoV-2 in Iran may be higher than expected

A large-scale seroprevalence study in Iran found that around 17.1% of the population has been infected with SARS-CoV-2, with significant variations between cities and occupations. Despite this high rate, a substantial proportion of the population remains susceptible to infection.

SourceThe Lancet·JournalThe Lancet Infectious Diseases·DateDec 15, 2020

Development of high-speed nanoPCR technology for point-of-care diagnosis of COVID-19

Developed by a team of researchers, the nanoPCR technology uses hybrid nanomaterials to detect viral RNA in under 11 minutes while maintaining high accuracy. The technique has been tested with 150 patients, showing zero false negatives and positives, and demonstrates its potential for rapid, decentralized point-of-care diagnosis.

SourceInstitute for Basic Science·JournalNature Biomedical Engineering·DateDec 8, 2020

Wastewater testing for COVID-19

A new study identifies a method that detects COVID-19 in wastewater samples and tracks infection trends. The test uses genetic material from SARS-COV-2 RNA, which correlates with community COVID-19 infections.

SourceStanford University·JournalEnvironmental Science & Technology·DateDec 7, 2020

Out of many COVID-19 tests, which one to choose?

Researchers recommend using real-time reverse transcription-polymerase chain reaction assays as the gold standard for testing, but acknowledge limitations due to false negatives. Point-of-care testing is emphasized as an urgent objective to detect the virus rapidly and early, with nano-based sensor technologies showing promise.

SourceAmerican Institute of Physics·JournalAPL Bioengineering·DateDec 1, 2020

For COVID-19 surveillance, test frequency and turnaround time are paramount, modeling suggests

A new study models trade-offs in COVID-19 testing, suggesting that rapid turnaround times and frequent testing have high epidemiological value for effective surveillance. The study found that delays in diagnosing infections had a significant impact on surveillance plans, emphasizing the importance of fast results.

Monitoring glaucoma at home

A new study from City University London suggests that glaucoma eye tests can be accurately performed at home using a tablet-based device called Eyecatcher. The study found high accuracy rates (98%) and adherence, with potential to detect rapidly progressing cases of glaucoma earlier.

SourceCity St George’s, University of London·JournalAmerican Journal of Ophthalmology·DateNov 20, 2020

New saliva-based antibody test for SARS-CoV-2 highly accurate in initial study

A new saliva-based antibody test developed by Johns Hopkins researchers accurately detects SARS-CoV-2 antibodies from small saliva samples. The test's high sensitivity and specificity make it suitable for various applications, including large-scale screening and monitoring changes in antibody-positivity rates over time.

SourceJohns Hopkins Bloomberg School of Public Health·JournalJournal of Clinical Microbiology·DateNov 13, 2020

Sorting out viruses with machine learning

Researchers at Osaka University have created a label-free method for identifying respiratory viruses based on changes in electrical current through silicon nanopores. This new system uses machine learning to achieve highly accurate virus classification, with potential applications for COVID-19 and influenza diagnosis.

SourceOsaka University·JournalACS Sensors·DateNov 11, 2020

USask researchers find face masks don't hinder breathing during exercise

A USask study of 14 healthy individuals wearing face masks during strenuous workouts found no detrimental effects on performance and minimal impact on blood and muscle oxygenation. The researchers' findings support the safe use of face masks in indoor exercise facilities, making them safer for gym-goers and allowing sports to continue.

SourceUniversity of Saskatchewan·JournalInternational Journal of Environmental Research and Public Health·DateNov 5, 2020

Malaria test as simple as a bandage

Researchers created a test device using protein biomarkers in dermal interstitial fluid, detecting malaria in 20 minutes and requiring no medical expertise or equipment. The patches could cost around $1 each and be adapted for other diseases with biomarkers in interstitial fluid.

SourceRice University·JournalMicrosystems & Nanoengineering·DateNov 2, 2020