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#diagnostictests — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #diagnostictests, aggregated by home.social.

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  1. Establishing #methods to #monitor #H5N1 #influenza virus in dairy #cattle #milk

    Source: MedRxIV, https://www.medrxiv.org/content/10.1101/2024.12.04.24318491v1

    Abstract
    Highly Pathogenic Avian Influenza strain H5N1 has caused a multi-state outbreak among US dairy cattle, spreading across 15 states and infecting hundreds of herds since its onset. We rapidly developed and optimized PCR-based detection assays and sequencing protocols to support H5N1 molecular surveillance. Using 214 retail milk from 20 states for methods development, we found that H5N1 concentrations by digital PCR strongly correlated with qPCR cycle threshold (Ct) values, with dPCR exhibiting greater sensitivity. We also found that metagenomic sequencing after hybrid selection was best for higher concentration samples while amplicon sequencing performs best for lower concentrations. By establishing these methods, we were able to support the creation of a statewide surveillance program to test bulk milk samples monthly from all cattle dairy farms within Massachusetts, which remain negative to date. The methods, workflow, and recommendations described here provide a framework for others aiming to conduct H5N1 surveillance efforts.

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    #aH5n1 #abstract #avianInfluenza #AVIANINFLUENZA #birdFlu #dairyCow #dairyProducts #diagnosticTests #foodSafety #h5n1 #health #massachusetts #news #research #USA

  2. Just checking, but I see this correctly:

    This map in The Guardian only shows places where test-positives have been found, instead of a (by all means if needed: dichotomised) result for all tests that were conducted?
    theguardian.com/environment/20

    Those two may be the same, but in that case that would have been news in itself, would it not?

    Sounds like a case for @TerribleMaps

    #TerribleMaps #Environment #DiagnosticTests

  3. Safeway spent $367M to prepare for Theranos tests that never came - Enlarge / Elizabeth Holmes, founder and chief executive officer of Ther... - arstechnica.com/?p=1801978 #elizabethholmescriminaltrial #diagnostictests #clinicallabs #theranos #safeway #policy #court

  4. Malaria seems to be evolving to hide from rapid tests - Enlarge / A technician performs rapid tests for malaria in Thailand. (credit: Thi... - arstechnica.com/?p=1799378 #diagnostictests #biochemistry #medicine #science #biology #malaria