CORONAVIRUS. A study carried out in sewage treatment plants showed the presence of traces of Covid-19 in the wastewater. The detection of these traces, more or less numerous, would make it possible to measure the presence of the virus on the territory.
A study by the City of Paris has opened the way to a new way of testing the population for coronavirus, or rather to measure its presence and thus alert to a potential second epidemic wave. Researchers detected the presence of traces of Covid-19 in the capital’s wastewater, at the start of the epidemic, at its peak and during the downward phase that we are now seeing. « The more the epidemic progressed, the more genome there was in the wastewater. From the time that there was confinement, after a week, we started to see this viral load decrease. Today « Today, we are in the downward phase », explains Laurent Moulin, in charge of research and development at Eaux de Paris, at France Inter. Monitoring wastewater in treatment plants is another indicator of the presence of Covid-19 in homes, in addition to conventional, serological or PCR tests. This also has the advantage of anonymously « testing » the population. « Since they don’t go to the doctor, we can’t count them. With this method, we count everyone, » notes Laurent Moulin.
According to the Ministry of Health, the first cases of Covid-19 in France were listed on January 24, with the care of a Frenchman and two Chinese tourists who stayed in Wuhan. But it is becoming more and more likely that the disease was present in France long before, as some specialists feared (in particular in this documented article on the first cases in Europe). Yesterday evening, Professor Yves Cohen, head of the intensive care unit at Jean-Verdier hospital in Bondy, in Seine-Saint-Denis, assured on BFMTV that he had in his establishment « a positive case at Covid-19, on 27 last December « . The patient was tested retrospectively, the results were known a few days ago. The man « was sick 15 days and infected his two children, but not his wife. He was surprised, he did not understand how he was infected, he had not made a trip, » added the doctor. Results confirmed by an infectious disease specialist from the nearby Avicenne hospital. Why is this a game-changer? « This suggests that the virus was circulating sooner than expected on French territory, from the end of December, » explains Dr Bouchaud to the Parisian. The coronavirus has therefore been able to spread in France much more and in a much more diffuse way than the models predicted in January, February and March.
- The deconfinement map evolved positively during its last presentation, with Mayenne, Loire-Atlantique and Gers now in the « green ». A new version is presented this evening.
- Protective masks are available from Monday 4 May in supermarkets. Their price has been capped at 0.95 euros per unit, they can of course be sold for less.
- Edouard Philippe presented the deconfinement plan to the Senate on Monday.
- The Covid more threatening than last week. The government spokeswoman said yesterday that « the rate of contagiousness » of the coronavirus epidemic has rebounded in recent days. This rate was « 0.5, that is to say 10 people contaminated only 5 the following week. Today, we are at a rate of 0.63 », she said. . This evolution is explained by a certain relaxation of the respect for confinement, the French making « more outings » in public space.
- Fear of a second wave of the epidemic pushed 316 mayors to ask the President of the Republic to postpone the reopening of schools.
The latest assessment of the coronavirus pandemic in France was released this Sunday, May 3 by the Directorate General of Health. Once again, the number of people in intensive care decreases (8 less) while the number of deaths increases with 135 more deaths recorded. Here are the details of the figures:
- 131,287 cases confirmed by PCR (Ehpad included), i.e. 308 more
- 70,767 cases in Ehpad, or 79 more
- 24,895 deaths in total (Ehpad included), or 135 more
- 15,583 hospital deaths, an additional 96
- 93 12 deaths in nursing homes, 39 more
- 25,815 hospitalizations in progress, 12 less
- 3,819 people currently in intensive care, 8 fewer
- 50,784 people discharged from hospital, 222 more
NB: the data relating to people hospitalized and in intensive care presented above correspond to the number of patients in the course of care and not to the accumulation since the beginning of the epidemic. In total, there were 92,799 hospitalizations. Similarly, hospitalizations and additional resuscitation cases in 24 hours correspond to net figures, taking into account cures and deaths. In the last 24 hours, roughly, 345 more hospitalizations have been recorded and 80 admissions in intensive care.
16:38 – « We gave ourselves three weeks »
While holding a press conference on Monday afternoon, Emmanuel Macron said that the deconfinement was conditioned by the evolution of figures from hospitals during the three weeks which will follow May 11. « We gave ourselves three weeks, » said the head of state.
16:14 – The point in Auvergne-Rhône-Alpes
In the Auvergne-Rhône-Alpes region, 1,364 people have died from the coronavirus since the start of the pandemic (+9) while 2,482 people are still hospitalized (+8) and 358 patients are in intensive care (- 1), according to the latest figures from Public Health France.
15:27 – Why can we be cured, but still tested positive?
Cases of patients cured of the coronavirus, but tested again positively have been reported by the hospital center of Tulle. Jean-François Faucher, head of infectious and tropical diseases department at the CHU Limoges, explained this phenomenon to France 3 Nouvelle Aquitaine. « When one has recovered from an infection, one can still detect in samples the genetic presence of the microbe when there is no longer any viable microbe », analyzes Jean-François Faucher, who relied on work made by biologists. According to the latter, these cases do not represent a danger of contagiousness.
15:09 – Caregivers overcontaminated according to the CGT
The CGT-Health presented an investigation on Monday according to which no less than 12,000 employees of hospitals, clinics, Ehpad were contaminated with Covid-19. This would represent, for the profession, a contamination rate ten times higher, on average, than that of the rest of the French population.
14:56 – Seven new deaths in Brittany, update in the region
According to the latest data from Public Health France, seven people died of coronavirus in Brittany in the last 24 hours. In the region and since the start of the Covid-19 epidemic, 219 deaths have been caused in hospitals, 59 in Ehpad-type medical-social establishments. 45 patients are still in intensive care in Brittany.
14:37 – How is Public Health monitoring the coronavirus epidemic?
« A surveillance system to monitor the evolution of the epidemic, measure its impact and recommend the necessary measures » has been put in place by Public Health France. An educational file to « understand the device, its objectives, our partners and the sources of COVID-19 monitoring data is available and downloadable » explains the institution. He understands :
- the different phases of an epidemic,
- epidemiological surveillance of COVID-19 in phase 3,
It aims to:
- measure the dynamics of the epidemic via city medicine,
- measure the severity of the epidemic and its impact on the healthcare system,
- measure the impact of the epidemic on mortality, and
- measure the impact, monitoring and experience of the epidemic in the general population.
14:11 – What if dogs can detect coronavirus?
Dominique Grandjean, professor at the Maisons-Alfort veterinary school in Val-de-Marne is experiencing « a first » in his profession, in these times of epidemic. Dogs are currently being trained to detect coronavirus. The first tests were carried out last Thursday, and the results are encouraging. For example, Bruce, a two-year-old German shepherd, trained to find missing persons and detect explosives, spotted a Covid-19 positive sample among several vials placed in front of him.
13:54 – Hypertension medications are not risk factors
According to three studies published in the New England Journal of Medicine, high blood pressure medications are not risk factors. A fear had been expressed after animal studies showing that these molecules could increase in the body the presence of proteins called ACE2, which serve as entry points to the new coronavirus in humans.
13:37 – A mutant and therefore elusive virus?
The discovery by a team of Chinese scientists of 33 variants of the new coronavirus in a recent study, pre-published on the MedRxvid site, highlights that « the capacity of this coronavirus to mutate has been very underestimated so far ». A mutant virus would also make it more difficult to find an effective vaccine, each strain having different characteristics. It was widely believed that Covid-19 was stable, but these many variants, 19 of which had never been observed, « suggest that we have only a very limited understanding of the true diversity of forms of the virus in circulation » , points out the Chinese epidemiologist Li Lanjuan. Among the variants of the coronavirus discovered by Chinese scientists, some of them are more virulent than others, including one strain that has a viral load 270 times higher than the most harmless. This strain would be the same as that which is most widespread in Europe, and which also prevails in New York.
13:20 – Update in PACA
As in the rest of the country, the Provence-Alpes-Côte-d’Azur region presents encouraging figures, with no deaths recorded in the past 24 hours, according to data from Public Health France. 1,504 are still hospitalized in the region, including 262 in intensive care. Since the start of the Covid-19 epidemic, 708 patients have died in PACA.
12:58 – Lower spread of the virus in dense cities?
According to a recent World Bank study, high population density in cities could help reduce the spread of the coronavirus. By studying 284 Chinese cities, the researchers behind this study have highlighted the role played by “certain services such as broadband Internet or home meal delivery”, which facilitate compliance with confinement and therefore limit transmission of the virus.
12:42 – Can we be infected twice with coronavirus?
For the end of confinement, it is important to know if a sick person from Covid-19 can contract it a second time. At the moment, scientists are not sure that a first infection completely immunizes the patient. « We don’t know if having antibodies is an absolute element of protection. And we are not going to resolve this right away, » said the president of the Scientific Council, Jean-François Delfraissy, there are two weeks.
11:52 – A duration of contagiousness between 17 and 36 days
A person with Covid-19 is considered cured if at least eight days after the first symptoms appear, there is no longer any fever or difficulty breathing. However, a study published in a British scientific journal estimates that one in three people cured continues to shed the virus for about 20 days. By adding the incubation periods, a person infected with the coronavirus could be contagious between 17 and 36 days.
11:24 – Nature to fight the next pandemics
For four experts from the Intergovernmental Platform on Biodiversity, “future pandemics [comme celle du nouveau coronavirus] are likely to occur more frequently, spread faster, have a greater economic impact and kill more people. » In an article published on the institution’s website, they then claim the need for a « transformative change », where the protection of nature would be at the heart of the current choices of governments.
11:08 – The point in the Great East
Even if the numbers improve, the Grand Est remains one of the regions most affected by the Covid-19. According to the latest assessment by Public Health France, the number of deaths in the region linked to the coronavirus amounted to 2,953. 3,798 people are still hospitalized, including 504 in intensive care.
10:52 – Avdoralimab and tocilizumab: what difference?
The two treatments have recently been cited as potential remedies against the coronavirus and more specifically against the cytokine storm, corresponding to the worsening of patients with Covid-19. Avdoralimab has yet to be tested in Marseille, while tocilizumab has already been tested in Paris. « This is a process parallel to ours, which may also prove to be complementary, except that we are not targeting the same molecule », Éric Vivier, scientific director of Innate explained last week to 20 Minutes Pharma and professor at hospitals and the faculty of Marseille.
10:30 am – How does a coronavirus screening test take place?
If the test is quick, it can still be a little painful in some people. And for good reason, to be able to be tested, it is first of all necessary that a sample is taken. To do this, you have to push a kind of large cotton swab into the nose. The idea is to go far enough to reach the nasopharyngeal area. Asked by franceinfo, Bruno Pozzetto, head of the virology department at the Saint-Etienne teaching hospital, explains: « You have to push the swab down into the back of the throat, beyond the line of the eyes. There is a risk to make the patient cry a little, to hurt him a little, but it’s almost a success factor. «
10:25 – New Aquitaine, a region little affected by the epidemic
New Aquitaine is among the regions least affected by the coronavirus pandemic. The region has identified 592 hospitalized patients, including 87 in serious condition in intensive care. 350 people died from the epidemic and 1,094 were discharged from the hospital. The Charente has the lowest number of hospitalizations with five people hospitalized, two of whom are in intensive care.
09:59 – Update on the situation in Bourgogne-France-Comté
In the Bourgogne-Franche-Comté region, according to the latest figures from Public Health France, 1,143 people are hospitalized for coronavirus, 174 of whom are in intensive care. In the region, since the start of the epidemic, 856 people have died from the coronavirus and 2,495 have been cured. These figures are only for hospital cases.
09:50 – Coronavirus complicates childbirth
Near Ouest-France, Pr Philippe Deruelle, secretary general of the National College of Gynecologists and Obstetricians, and head of the gynecology-obstetrics pole at the CHU Strasbourg, said that the practitioners were confronted with cases of Covid on women pregnant. « We were very surprised by the discrepancy between our experience and that of the Chinese, who told us that there was no serious form in pregnant women, said the doctor. This is not entirely true. Pregnant women are not more affected or more severely than non-pregnant women (around 10% of severe forms). But when they have a severe form, it is much more complicated to manage because they carry life « , he said adding: « As for a woman in respiratory distress, she could not give birth. She had to have a cesarean section ».