Étude - activities

Double jet-stream: what is this phenomenon likely to be related to heatwaves in France

For a few days, some scientists only say one thing: “double jet-stream”. This atmospheric air flow could be the explanation of most heatwaves that occurred this summer in France, leading to dramatic fires and a very strong episode of drought. Here is more about that matter.

Covid: what is the nocebo effect explaining 76% of the vaccine’s side effects?

An American study explains 76% of side effects felt after the injection of the first dose of Covid vaccine are caused by the nocebo effect. But then, what is the nocebo effect?

Covid: faced with the Delta variant, a passed infection protects more than vaccination

An American study issued this Wednesday January 19, 2022, shows non-vaccinated people who had Covid in the past are better protected against the Delta variant than people who have been vaccinated only. Yet, “vaccination remains the safest strategy”, the U.S. health authorities specify.

Covid: omicron variant three times more likely to cause reinfection, a study says

As nine Omicron variant cases have been reported in France to this stage, a South African study says the reinfection risk increases with the Omicron variant. Keep reading to find out more.

Covid: an Institut Pasteur study reminds the importance of room-airing and facemask-wearing

An Institut Pasteur study published in The Lancet magazine reminds the importance of room-airing and facemask-wearing as France is hit by a fifth Covid wave.

Covid: the French government confirms Moderna’s vaccine is halted for people under 30

France follows Sweden and no longer recommends to use Moderna’s vaccine in people under 30, following a report from the Haute Autorité de Santé. And for good reason, an increase risk of myocarditis and pericarditis. The French government followed the health authorities’ recommendation and now halts the use of the vaccine for the youngest.

Covid: Against the Delta variant, Pfizer and Moderna vaccines are only 66% effective

According to a study published this August 24, 2021 by the American health authorities, Pfizer and Moderna are no longer 91% effective but 66% effective against the Delta variant.

Covid: the United Kingdom to launch a clinical trial to study Coronavirus reinfection

Searchers from the Oxford University recently announced they are launching a trial to study Covid reinfection to understand how it can occur, determine antibodies’ lifespan more exactly, and help laboratories in developing more effective vaccines.

Covid: lack of physical exercise likely to lead to severe disease?

Physical inactivity could be a risk factor leading to severe Covid-19, a recent study published in the British Journal of Sports Medicine found.

Covid: the French Medicines Agency releases latest data about vaccine side effects

As the vaccination campaign is expected to increase even more in France over the coming weeks, the ANSM – the National Medicines Agency – has unveiled the conclusions of their latest investigation on side effects noticed following Covid-19 vaccination. Keep reading to find out more.

Covid: Does pollution boost the spread of coronavirus?

Could Covid-19 spread more in the event of local air pollution? This is the hypothesis raised by several researchers trying to determine the part of fine particles in the spread and transmission of the virus. Let us explain.

Covid-19: The highest risk places of infections? Schools and places of worship brought into question

Where are people the most infected with Covid-19? A question Institut Pasteur's latest ComCor study tried to answer to, so has a German study bringing more details about places of worship and schools.

Paris: 4th European city with the deadliest air pollution

What a sad study The Lancet issued on January 19, 2021. According to the British scientific magazine, Paris is the 4th European city with the deadliest air pollution. Every year, the French capital reports 2,500 nitrogen dioxide-related deaths.

Covid: 90% of symptomatic cases non detected past the first lockdown, the INSERM says

According to a study released this Tuesday December 22, 2020 the French National Institute for Health and Medical Research notices that after the first lockdown-exit episode, the French health services have been able to report only one asymptomatic case in two, and that 90% of the symptomatic cases have not been detected.

Coronavirus: purple toe, hair loss… these new telltales to keep an eye on

Even tough fever, cough and even loss of smell and taste are part of the main symptoms already known of coronavirus, others – much odder – have been discovered. From purple toe to hair loss, via persisting hiccups or even loss of hearing… Here are the new Covid-19 symptoms highlighted by some scientists.

Coronavirus: asymptomatic cases to lose their antibodies quicker, a study says

Discoveries as for coronavirus still go on... After the June 2020's Chinese study released on June 18 saying that people infected by the novel coronavirus but who showed no symptoms may develop a weaker immune response, a new British study rubs it in. Keep reading to find out more.

Coronavirus: the virus can survive up to 28 days on surfaces, a new study says

Research on the novel Coronavirus in order to learn more about its spread are still going on. According to a recent study carried out by the Australian Commonwealth Scientific and Industrial Research Organization, the virus is “extremely stable” on flat surfaces such as phone screens on bank bills, able to survive up to 28 days if it is in a cold and dark environment. Yet, the novel Coronavirus is less likely to survive on porous surfaces such as cotton.

Coronavirus could spread through the air, a Chinese study says

A new Chinese study says coronavirus does not only spread through contaminated droplets, but also through the air, naming by the air inhaled and exhaled by a person carrying the virus, even asymptomatic.

Coronavirus: stroke, hallucinations… Covid-19 affects the brain too

Would the novel coronavirus have severe consequences on the brain? If a British study released on July 8, 2020 is to be believed, Covid-19 would lead to serious affections on the brain such as strokes or sort of hallucinations, including in cases showing mild symptoms. Let’s take stock.

Coronavirus: sea, river, lake… can Covid-19 be spread through water?

While many beaches have reopened and many people are counting on enjoying nature again and swimming in the sea, lake or river, is there any risk Covid-19 can spread through water? Let’s have a look on the matter.