biological agent

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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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Masks for medical use

Masks for medical use

The SARS-CoV-2 pandemic period we are currently living through shows a cruel lack of masks to protect oneself. This is an opportunity for us to review respiratory masks: the different types of masks? for whom? for what use? how to use them? That’s as many questions we’re going to try to answer. What is this…

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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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