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March 30, 2023
The arrival of fine weather promotes the dispersal of pollen, a dynamic that has been accelerating for several years with the rise in temperatures induced by global warming.
With 28°C this Wednesday in Biarritz, spring or even summer temperatures began to be recorded in France this week. A marker of the ever earlier arrival of heat in France, but which also promotes the release of pollen.
“The weather is spring-like this week and the pollens are out,” note on his site the National Aerobiological Surveillance Network (RNSA). The organization has updated its pollen allergy risk map, which confirms this dynamic.
All the departments of metropolitan France are at least in “medium” health impact, with 15 departments in “high” impact. Among these are the Lower Rhinethe Territory of Belfortthe Haute-SaoneTHE Alpes-Maritimesthe WasTHE Bouches-du-Rhonethe Vauclusethe Gard, Herault, Aveyronthe Tarnthe Upper Garonne, Ariege, the Aude and the Eastern Pyrenees.
Different types of pollen implicated
From north to south of France, the types of pollen involved differ. In Alsace, those of birch, hornbeam and ash are the most present. In Haute-Saône and in the Territoire de Belfort, those of charm.
In the departments of the south of France, it is mainly the pollens of cupressaceae, which notably include juniper and cypress, which are singled out.
For allergy sufferers, the gradual arrival of birch pollen on the territory is in any case bad news. The RNSA evokes a “risk of allergy which will evolve between the low level and the high level according to the departments”.
And Press release of the RNSA already warned on March 21 regarding birch pollen. The season “will start this week” alerted the network, which specified that the flowering of gasoline began on March 27 in Paris or Montluçon.
“Birch pollen has a very high allergenic potential causing allergy sufferers to many ocular, nasal and even respiratory symptoms”, continues the RNSA.
A short lull
The significant sunshine experienced by France on Wednesday and Thursday promotes the release of pollen into the air. Coupled with air pollution, symptoms in people can even be exacerbated.
The arrival of the rain from this Thursday will nevertheless give a moment of respite to sensitive people. Modeling maps of France’s exposure to birch pollen show that from March 31, a lull in the spread is expected.
But that’s without counting on their strong comeback from April 2, before reaching a peak on April 4. A large part of the country will be subject to a large concentration of birch pollen.
The role of global warming
A note published on February 24 on the website of the Ministry of Ecological Transition entitled “Impact of climate change: health and society”, shows that global warming and the rise in temperatures it induces has a link with the quantity of pollen released into the air every year.
“The amounts of birch pollen that are released in March-April depend on the temperatures and the weather before from July of the previous year,” the note says.
With a historically hot summer of 2022, the quantities of pollen released this year will therefore be logically significant. “This change in temperature has only led to an increase in the amount of birch pollen emitted and therefore an increase in allergies,” said the ministry.
Mysterious liver inflammation in children: cause found?
written by Alexandra Hartman Editor-in-Chief
Younger children in particular were affected by liver inflammation. Bild: dpa
Hundreds of children suddenly suffered from liver inflammation last year. Why? Studies are now confirming that a certain virus might be responsible – which is actually harmless.
A hitherto unnoticed virus and other factors might be behind a rise in unexplained hepatitis cases in children worldwide. This is suggested independently by three studies in the journal “Nature”. The return of children to daycare centers and schools following the corona lockdowns might also play a role.
At the beginning of April 2022, mysterious and sometimes severe cases of hepatitis – an inflammation of the liver – occurred in previously healthy children in whom no hepatitis viruses might be detected. The World Health Organization reported in July WHO more than 1000 sick children in 35 countries, from Germany no case was listed in the corresponding list. Around 50 of the patients, some of whom were very young, required a liver transplant, and at least 22 died.
The studies that have now been published from Great Britain and the USA suggest a connection with the adeno-associated virus 2 (AAV2): The research groups led by the University of Glasgow, University College London and the University of California found it in blood and liver tissue samples from children partly high concentrations of the virus.
AAV2 needs “helper viruses”
Until now, AAV2 was thought not to cause disease. In addition, AAV2 itself is not able to infect cells: it needs other viruses to multiply.
more on the subject
In fact, the team from University College London found small traces of a human adenovirus and a herpes virus in addition to AAV2, which might act as “helper viruses”. The scientists suspect that these allow AAV2 to multiply and contribute to the severity of liver damage.
“Liver manifestations are common with many viruses,” says physician Thomas Baumert, head of the French “Inserm” research center for, among other things, viral liver diseases at the University of Strasbourg. The fact that the infection with several viruses is the cause of the outbreaks instead of a new, unknown pathogen offers the possibility of prevention. “The results also underscore the importance of childhood immunization and suggest that we should consider developing additional vaccines once morest common pathogens.”
Football: Hervé Renard appointed coach of the French women’s team – rts.ch
written by Alexandra Hartman Editor-in-Chief
Hervé Renard has been appointed coach of the France women’s team until August 2024, a position vacant since the dismissal of Corinne Deacon on March 9, announced the French Football Federation (FFF).
The 54-year-old Frenchman, double winner of the African Cup of Nations at the head of Zambia (2012) and Côte d’Ivoire (2015), has never led a women’s team.
His priority will be to restore calm and serenity within a group weakened by the rebellion of several executives (Wendie Renard, Kadidiatou Diani, Marie-Antoinette Katoto), who withdrew from the selection to protest once morest the management. of Corinne Deacon, resulting in the dismissal of the coach.
A long-awaited 1st list
Renard will release its first list on Friday. The possible reintegration of the rebellious will be at the center of the questions, as will the fate reserved for the Lyon striker Eugénie Le Sommer or the PSG goalkeeper Sarah Bouhaddi, long dismissed by Corinne Deacon.
The appointment of Hervé Renard, who officiated until Tuesday at the head of Saudi Arabia, is not a surprise, the former defender being the number 1 choice of the federation for several weeks.
afp/btro