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"Gaillet, Mélanie"
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Outbreak of Oropouche Virus in French Guiana
by
Enfissi, Antoine
,
Abboud, Philippe
,
Servas, Véronique
in
arboviruses
,
Biodiversity
,
Bunyaviridae
2021
Oropouche fever is a zoonotic dengue-like syndrome caused by Oropouche virus. In August-September 2020, dengue-like syndrome developed in 41 patients in a remote rainforest village in French Guiana. By PCR or microneutralization, 23 (82.1%) of 28 tested patients were positive for Oropouche virus, documenting its emergence in French Guiana.
Journal Article
Seroprevalence of anti-SARS-CoV-2 IgG at the first epidemic peak in French Guiana, July 2020
by
Tourbillon, Céline
,
Enfissi, Antoine
,
Alves Sarmento, Christelle
in
2020 AD
,
Adolescent
,
Adult
2021
While Latin America has been heavily affected by the pandemic, only a few seroprevalence studies have been conducted there during the first epidemic wave in the first half of 2020.
A cross-sectional survey was performed between 15 July 2020 and 23 July 2020 among individuals who visited 4 medical laboratories or 5 health centers for routine screening or clinical management, with the exception of symptomatic suggestive cases of covid-19. Samples were screened for the presence of anti-SARS-CoV-2 IgG directed against domain S1 of the SARS-CoV-2 spike protein using the anti-SARS-CoV-2 enzyme-linked immunosorbent assay (ELISA) from Euroimmun.
The overall seroprevalence was 15.4% [9.3%-24.4%] among 480 participants, ranging from 4.0% to 25.5% across the different municipalities. The seroprevalence did not differ according to gender (p = 0.19) or age (p = 0.51). Among SARS-CoV-2 positive individuals, we found that 24.6% [11.5%-45.2%] reported symptoms consistent with COVID-19. Our findings revealed high levels of infection across the territory but a low number of resulting deaths, which can be explained by French Guiana's young population structure.
Journal Article
Sexual and addictive risk behaviors and sexually transmitted infections in illegal gold miners in French Guiana: A multicenter observational study
by
Schaub, Roxane
,
Parriault, Marie-Claire
,
Figueira da Silva, Amanda
in
Behavior
,
Diagnosis
,
Evaluation
2022
Common representations of the world of gold mining-especially illegal-are usually negative: the activity conjures up images of drug trafficking, human exploitation, the sex trade, environmental destruction, and infectious diseases, in particular sexually transmitted infections (STIs). The aim of the present article is to describe the levels of risk behaviors such as transactional sex, multiple sexual partners, and the frequency of condom use, addictive substance consumption, and the prevalence of STIs among the population of illegal gold miners in French Guiana (FG), a French overseas entity in Amazonia, in order to guide potential interventions. An observational multicenter cross-sectional study was carried out from October to December 2019 along the two borders of FG with Suriname and Brazil at rest sites used by the miners. Among the 499 participants, transactional sex was very prevalent, declared by 33.5% of men and 8.4% of women. Condoms were more frequently used for transactional sex than with a non-commercial partner (93.4% versus 42.1%). More women were tested for HIV than men (91.1% versus 55.2%). Excessive alcohol consumption (57.3%%) and tobacco use (41.2%) were very frequent, but cocaine or crack consumption was low (1.2%), which refuted our initial assumption. Consumers of alcohol had more sexual partners and reported condom use more frequently. Prevalence of HIV, HCV, HBV, and syphilis was respectively 0.5% (95% CI: 0.1-2.1), 2.1% (95% CI: 0.7-3.6), 1.6% (95% CI: 0.3-2.8), and 12.4% (95% CI: 9.0-15.7), which was higher than in the local population, especially for syphilis. This study documents for the first time the risk behaviors of gold miners in FG. Although the level of condom use was high, the prevalence of STIs combined with the high rate of transactional sex should encourage an increase in prevention and screening, in particular through rapid tests, given the mobility of the population concerned.
Journal Article
Simultaneous dengue and COVID-19 epidemics: Difficult days ahead?
by
Passard, Nathalie
,
Djossou, Félix
,
Rousset, Dominique
in
Betacoronavirus
,
Biology and life sciences
,
Coinfection
2020
While some clinical signs may point to COVID-19 or dengue in case series, at the individual patient scale, the imperfect positive predictive value and clinical variability do not guarantee a diagnosis of certainty (Table 1). [...]some studies report 25% of patients with confirmed dengue having a cough and 20% with upper respiratory tract symptoms [14]. Because of this great disruption in the organization of care, until recently it was only after receiving the results (24–48 hours for negative results) that further explorations were performed, which for a while led to potentially dangerous diagnostic delays in patients with dengue. According to the context and clinical presentation, physicians may prescribe a malaria test, blood and urine cultures, serologies, or molecular diagnosis of differential diagnoses. The extinction of the dengue virus epidemic is less likely when increased human movement enhances the rescue effect. [...]modeling suggests that infection hubs and reservoirs can be locations people
Journal Article
Breakthrough Infections of SARS-CoV-2 Gamma Variant in Fully Vaccinated Gold Miners, French Guiana, 2021
by
Ballet, Mathilde
,
Jacoud, Estelle
,
Djossou, Félix
in
Asymptomatic
,
Biodiversity
,
Breakthrough Infections of SARS-CoV-2 Gamma Variant in Fully Vaccinated Gold Miners, French Guiana, 2021
2021
An outbreak of severe acute respiratory syndrome coronavirus 2 caused by the Gamma variant of concern infected 24/44 (55%) employees of a gold mine in French Guiana (87% symptomatic, no severe forms). The attack rate was 60% (15/25) among fully vaccinated miners and 75% (3/4) among unvaccinated miners without a history of infection.
Journal Article
Retrospective Study of Infections with Corynebacterium diphtheriae Species Complex, French Guiana, 2016–2021
by
Rose, Vincent Sainte
,
Carod, Jean François
,
Blaizot, Romain
in
Actinomycetales infections
,
Adolescent
,
Adult
2024
Human infections with Corynebacterium diphtheriae species complex (CdSC) bacteria were rare in French Guiana until 2016, when the number of cases diagnosed increased. We conducted an epidemiologic, multicenter, retrospective study of all human CdSC infections diagnosed in French Guiana during January 1, 2016-December 31, 2021. A total of 64 infectious episodes were observed in 60 patients; 61 infections were caused by C. diphtheriae and 3 by C. ulcerans. Estimated incidence increased from 0.7 cases/100,000 population in 2016 to 7.7 cases/100,000 population in 2021. The mean patient age was 30.4 (+23.7) years, and male-to-female ratio was 1.7:1 (38/22). Of the 61 C. diphtheriae isolates, 5 tested positive for the diphtheria toxin gene, and all results were negative by Elek test; 95% (61/64) of cases were cutaneous, including the C. ulcerans cases. The increase in reported human infections underscores the need to raise awareness among frontline healthcare practitioners to improve prevention.
Journal Article
Determination of different social groups’ level of knowledge about malaria in a multicultural Amazonian cross-border context
2023
Background
A steady decline in the number of cases of malaria was observed in the 2000s in French Guiana. This enabled regional health policies to shift their public health goal from control to elimination. To include inhabitants in this strategy, the main objective of this study was to describe knowledge about malaria, and related attitudes and practices in persons living in the French Guiana border.
Methods
We conducted a survey in people over 15 years old living in the twelve neighbourhoods of Saint-Georges de l’Oyapock with the highest malaria incidence. It comprised a 147-item questionnaire which collected data on socio-demographic characteristics and included a Knowledge Attitude and Practices survey on malaria. Knowledge-related data were studied using exploratory statistical methods to derive summary variables. A binary variable assessing level of knowledge was proposed and then assessed using exploratory approaches.
Results
The mean age of the 844 participants was 37.2 years [15.8], the male/female sex ratio was 0.8. In terms of nationality, 485 (57.5%) participants were Brazilian and 352 (41.7%) French. One third (305, 36.1%) spoke Brazilian Portuguese as their native language, 295 (34.9%) the Amerindian language Palikur, 36 (4.3%) French. The symptoms of malaria and prevention means were poorly known by 213 (25.2%) and 378 (44.8%) respondents, respectively. A quarter (206, 24.4%) did not know that malaria can be fatal. Overall, 251 people (29.7%) had an overall poor level of knowledge about malaria. Being under 25 years old, living in a native Amerindian neighbourhood, having an Amerindian mother tongue language, having risk behaviours related to gold mining were significantly associated with a poor level of knowledge.
Conclusions
This study is the first to describe the poor level of knowledge about malaria in populations living in the malaria endemic border area along the Oyapock river in French Guiana. Results will allow to reinforce, to diversify and to culturally adapt prevention messages and health promotion to increase their effectiveness with a view to quickly reaching the goal of malaria elimination through empowerment.
Journal Article
Sexual and addictive risk behaviors and sexually transmitted infections in illegal gold miners in French Guiana: A multicenter observational study
by
Schaub, Roxane
,
Parriault, Marie-Claire
,
Figueira da Silva, Amanda
in
Alcohol use
,
Antibodies
,
Behavior
2022
Common representations of the world of gold mining-especially illegal-are usually negative: the activity conjures up images of drug trafficking, human exploitation, the sex trade, environmental destruction, and infectious diseases, in particular sexually transmitted infections (STIs). The aim of the present article is to describe the levels of risk behaviors such as transactional sex, multiple sexual partners, and the frequency of condom use, addictive substance consumption, and the prevalence of STIs among the population of illegal gold miners in French Guiana (FG), a French overseas entity in Amazonia, in order to guide potential interventions.
An observational multicenter cross-sectional study was carried out from October to December 2019 along the two borders of FG with Suriname and Brazil at rest sites used by the miners.
Among the 499 participants, transactional sex was very prevalent, declared by 33.5% of men and 8.4% of women. Condoms were more frequently used for transactional sex than with a non-commercial partner (93.4% versus 42.1%). More women were tested for HIV than men (91.1% versus 55.2%). Excessive alcohol consumption (57.3%%) and tobacco use (41.2%) were very frequent, but cocaine or crack consumption was low (1.2%), which refuted our initial assumption. Consumers of alcohol had more sexual partners and reported condom use more frequently. Prevalence of HIV, HCV, HBV, and syphilis was respectively 0.5% (95% CI: 0.1-2.1), 2.1% (95% CI: 0.7-3.6), 1.6% (95% CI: 0.3-2.8), and 12.4% (95% CI: 9.0-15.7), which was higher than in the local population, especially for syphilis.
This study documents for the first time the risk behaviors of gold miners in FG. Although the level of condom use was high, the prevalence of STIs combined with the high rate of transactional sex should encourage an increase in prevention and screening, in particular through rapid tests, given the mobility of the population concerned.
Journal Article
Healthcare students’ prevention training in a sanitary service: analysis of health education interventions in schools of the Grenoble academy
by
François, Patrice
,
Boussat, Bastien
,
Kuenemann, Marie
in
Addictive behaviors
,
Adolescent
,
Algorithms
2023
Background
The sanitary service is a mandatory prevention training programme for all French healthcare students. Students receive training and then have to design and carry out a prevention intervention with various populations. The aim of this study was to analyse the type of health education interventions carried out in schools by healthcare students from one university in order to describe the topics covered and the methods used.
Method
The 2021–2022 sanitary service of University Grenoble Alpes involved students in maieutic, medicine, nursing, pharmacy and physiotherapy. The study focused on students who intervened in school contexts. The intervention reports written by the students were read doubly by independent evaluators. Information of interest was collected in a standardised form.
Results
Out of the 752 students involved in the prevention training program, 616 (82%) were assigned to 86 schools, mostly primary schools (58%), and wrote 123 reports on their interventions. Each school hosted a median of 6 students from 3 different fields of study. The interventions involved 6853 pupils aged between 3 and 18 years. The students delivered a median of 5 health prevention sessions to each pupil group and spent a median of 25 h (IQR: 19–32) working on the intervention. The themes most frequently addressed were screen use (48%), nutrition (36%), sleep (25%), harassment (20%) and personal hygiene (15%). All students used interactive teaching methods such as workshops, group games or debates that was addressed to pupils’ psychosocial (mainly cognitive and social) competences. The themes and tools used differed according to the pupils’ grade levels.
Conclusion
This study showed the feasibility of conducting health education and prevention activities in schools by healthcare students from five professional fields who had received appropriate training. The students were involved and creative, and they were focused on developing pupils’ psychosocial competences.
Journal Article
Cryptosporidiosis outbreak in Amazonia, French Guiana, 2018
by
Favennec, Loic
,
Mosnier, Emilie
,
Valot, Stéphane
in
Adolescent
,
Bacteriology
,
Biology and Life Sciences
2022
Cryptosporidiosis outbreaks in South America are poorly documented. In March 2018, 51 cases of cryptosporidiosis were reported in Maripasoula, a village located in a remote forest area along the border between Surinam and French Guiana.
To identify the origin of the epidemic, we performed epidemiological, microbiological, and environmental investigations. Only the cases involving diarrhoea and Cryptosporidium-positive stool were considered as bona fide, while cases involving diarrhoea and close contact with a confirmed case were classified as \"possible\".
We identified 16 confirmed cases and 35 possible ones. Confirmed cases comprised nine children (median age of 18 months, range: 6-21), one immunocompromised adult and six soldiers. One child required a hospitalisation for rehydration. All 16 Cryptosporidium stools were PCR positive, and sequencing of the gp60 gene confirmed only one Cryptosporidium hominis subtype IbA10G2. Tap water consumption was the only common risk factor identified. Contamination of the water network with Cryptosporidium parvum subtype IIdA19G2 was found.
Water quality is a major public health issue in Amazonian French Guiana, especially for population at risk (children, people with comorbidity, travelers). For them, alternative water supply or treatment should be implemented.
Journal Article