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Does synthetic biology have the potential to transform the future of biological warfare?

Does synthetic biology have the potential to transform the future of biological warfare?

What is it about? Stijn Kuipers of King’s College London has published in 2019 an interesting study on the contribution of synthetic biology in the evolution of biological weapons. This is an opportunity for us to redefine what synthetic biology is and to examine in detail what it could contribute to the improvement of biological…

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What are the differences between a conventional vaccine and a messenger RNA vaccine?

What are the differences between a conventional vaccine and a messenger RNA vaccine?

By François NR Renaud, Scientific Advisor Vaccine has never been in the news so much It must be admitted that if the scientists had wanted to sabotage their research work they would not have done it otherwise. Well helped moreover by poor communication on the part of politicians and by the continuous news channels always…

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Hands up! What are the gloves for?

Hands up! What are the gloves for?

     By François NR Renaud, scientific adviser Gloves, whose origin goes back to antiquity, are elements of hand protection; handling (against abrasion), protection against heat or cold (firefighters, metallurgists, welders), protection against chemical or biological products (chemical industry, laboratories), against CBRN threats, against cuts (butchers). They are therefore personal protective equipment (PPE). As far as…

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Legionella: importance of aerosols, biological weapon?

Legionella: importance of aerosols, biological weapon?

A short history In Philadelphia, during the 58th American Legion Convention, scheduled for July 21-24, 1976, the Bellevue-Stratford Hotel welcomed the 182 participants. The hotel is a bit “old-fashioned” and the air-conditioning system needs to be repaired. A young 26 year old employee is in charge of controlling it but he falls ill (headaches, aches…

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Ammonium nitrate

Ammonium nitrate

By François NR RENAUD, honorary professor The explosion in the port of Beirut, on August 4, 2020, of 2,750 tons of ammonium nitrate, which destroyed a large part of the Lebanese capital, invites us to remember the usefulness of this product but also its drawbacks and in particular its explosive aspect. History The spectre of…

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Standards and efficiency of masks: it’s all a question of size !

Standards and efficiency of masks: it’s all a question of size !

What’s this about? We have talked several times about the effectiveness of masks in protecting against Covid-19. These include type 1 or 2 surgical masks, FFP1, FFP2 and FFP3, FMP1, FMP2 and FMP3 and alternative category 1 or 2 masks! All the more so since these masks meet different standards whose criteria do not always…

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The history of medical masks: why did we switch from reusable to disposable masks? Was it the right choice?

The history of medical masks: why did we switch from reusable to disposable masks? Was it the right choice?

What’s this all about? The pandemic at Covid-19 seems to be going away. For us scientists, it has revealed a very large number of lessons: how to deal with such an emerging virus? what pathogenicity? (small gripette or very serious disease?) ; what treatment (hydroxychloroquine, paparacetamol, remdesivir?); reliability of the viral diagnostic test (30% false…

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How to measure the real efficiency of a respiratory protection mask?

How to measure the real efficiency of a respiratory protection mask?

What’s this all about? We have already talked in this blog about the different masks filtering aerosols. In this period of so-called “deconfinement”, masks are more and more in demand. It is now well understood that the wearing of masks by caregivers, professionals in contact with the public or people moving around in the street…

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Masks in epidemics: towards a paradigm shift?

Masks in epidemics: towards a paradigm shift?

Abstract Let us take advantage of the lessons learned during this unprecedented pandemic, which could be long-lasting, to change our convictions, to question our truths in terms of protecting men and women in general and people who, because of their job, their function or their responsibilities are, on a daily basis, exposed to the risks…

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Treatments for Covid-19

Treatments for Covid-19

As the Covid-19 pandemic is still spreading across our territory, we will be looking at the various treatments currently being tested and potentially capable of stopping the progression of the disease in humans. The disease The surprising thing about Covid-19 is the extreme variability of the disease. Classic clinical signs appear after an incubation period…

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How to disinfect COVID-19?

How to disinfect COVID-19?

The COVID-19 pandemic is spreading inexorably across the planet and nearly 3 billion people are confined. The SARS-CoV-2 virus is spreading from person to person via respiratory droplets. We are therefore applying strict barrier measures to limit the number of contaminations, particularly among the elderly, among whom the virus claims the most victims. As in…

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The COVID-19 pandemic

The COVID-19 pandemic

In the evening when the French President of the Republic has just announced important measures to protect the population from the deleterious effects of the SARS-CoV-2 virus, it seemed important to me to put in order all the information concerning this new coronavirus. Human coronaviruses Four coronaviruses are responsible for the second cause of respiratory…

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The coronavirus a biological weapon ? or how to create a fake news

The coronavirus a biological weapon ? or how to create a fake news

We have often spoken in this blog about biological agents and their possible applications as biological weapons. This is the case of Lyme disease, anthrax, smallpox, plague, prions, influenza or even Ebola. While the Covid-19 epidemic is on the point of becoming a pandemic, and authorities in all countries are mobilized to stop the progression…

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Comparative measurements of the efficacy of 2 PPE garments against pesticides sprays

Comparative measurements of the efficacy of 2 PPE garments against pesticides sprays

1- What is it about? In all areas, standards make it possible to measure the conformity of a product to a given use. This is the case, of course, of the ISO 27065 standard which determines the performance requirements for protective clothing to be worn by operators applying pesticides (phytosanitary) and for re-entry workers (those…

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Coronavirus

Coronavirus

Coronavirus Background They belong to the family Coronaviridae. These are enveloped viruses in which the nucleic acid is a single-stranded RNA. They owe their name to the presence of protuberances on their periphery giving them a “crown” appearance under the electron microscope. Pathogenicity A number of them directly infect humans (human coronavirus) and are found…

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Thermophysiological tolerance of CBRN underwear

Thermophysiological tolerance of CBRN underwear

Some professionals require CBRN protection even though they are already equipped with PPE that specifically protects them in the performance of their job: this is the case for deminers, (EOD Explosive Ordnance Disposal), firefighters exposed to toxic fumes, helicopter pilots or fighter pilots. Ouvry has developed an undergarment that can be worn underneath normal equipment…

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