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Madeleine Johnson

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Madeleine covers PCR, nucleic acid amplification, and sample prep technologies for GenomeWeb and 360Dx. 

Articles Authored by Madeleine Johnson

Feb 19, 2021

Quidel Reports Delay in OTC COVID-19 Antigen Test Claims, Pours Cold Water on M&A Rumors

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The firm's over-the-counter claim submission is delayed because it has been unable to find the required number of positive cases among asymptomatic people.

Feb 17, 2021

RADx Expects COVID-19 Portfolio to Accelerate an Era of At-Home Infectious Disease Testing

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With $1.2 billion in funding earmarked for more than 40 projects, the portfolio represents a path out of the SARS-CoV-2 pandemic for the US.

Feb 12, 2021

Bio-Rad Seeks Transformational M&A as it Restructures and Invests in MDx Portfolio

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Executives mapped out the next few years for the firm, estimating a deceleration in COVID-19 testing beginning the second half of 2021.

Feb 04, 2021

Becton Dickinson Charts Ramp-Up, Transition of COVID-19 Diagnostics

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BD is reinvesting some of its $668 million Veritor Dx windfall into expanding the menu for a newly tripled installed base.

Feb 03, 2021

UK Team Creates Five-Minute SARS-CoV-2 MDx With Rarely Used Isothermal Amplification Method

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The University of Birmingham-developed method combines a method called EXPAR with a rapid upfront step to obviate reverse transcription.

Jan 29, 2021

Startup SimplSeq Aims to Shake Up Sequencing Sample Prep with Easy, Fast Tech

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The firm is a spinout of a new California-based tech incubator called Murrieta Genomics that aims to provide total support to genomics technology startups.

Jan 27, 2021

Germany's GNA Biosolutions Commercializing Rapid MDx Instrument, SARS-CoV-2 Test

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The firm is also developing an instrument-free molecular diagnostic assay technology for the home testing market.

Jan 13, 2021

At JP Morgan Conference, Quidel CEO Discusses Plan to Enter OTC Infectious Disease Test Market

The firm plans to begin its OTC efforts with a COVID antigen test but also sees potential in migrating other infectious disease tests.

Jan 08, 2021

SARS-CoV-2 Mutations Present Unexpected Opportunities, Challenges for MDx Developers

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Some tests that detect multiple SARS-CoV-2 genes are serendipitously signaling new viral variants while still effectively detecting infections.

Dec 18, 2020

GeneMe Commercializing Rapid COVID-19 Tests With Extremely Low Limits of Detection

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The firm claims a rapid isothermal test has an LoD of 20 viral copies per milliliter while a saliva-based PCR test has an LoD of 2 copies per milliliter.

The Scan

P.1 Re-infection Concerns

New analyses indicate the P.1 variant found in Brazil may be able to infect people who have already had COVID-19, the New York Times reports.

Aiming for May

According to CNBC, Novavax's CEO says its vaccine could be authorized in the US as early as May.

NIH Program to Address Structural Racism

The US National Institutes of Health has a new initiative to address structural racism in biomedical research.

PNAS Papers on Myelopathy GWAS in Japan, Hypertrophic Cardiomyopathy, MRSA Methylation

In PNAS this week: GWAS of TLV-1-associated myelopathy/tropical spastic paraparesis, analysis of twins with hypertrophic cardiomyopathy, and more.

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