Publications by authors named "A Teissier"

Article Synopsis
  • - This study investigates the prevalence of hepatitis B virus (HBV) in French Polynesia, where HBV infection significantly increases the risk of hepatocellular carcinoma (HCC), especially in the Austral archipelago, known for its high detection rates.
  • - Blood samples from nearly 2,000 adults were tested, revealing that 1.0% were carriers of HBV, with higher rates found specifically in certain areas like the Austral and Marquesas archipelagos. Factors such as location, age, and education level influenced HBV carriage.
  • - Although French Polynesia generally shows low HBV endemicity and low risk for hepatitis C and delta infections, the findings highlight a need for improved detection and prevention efforts, especially
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Background: French Polynesia (FP) comprises 75 inhabited islands scattered across five archipelagos. Between July and October 2021, the SARS-CoV-2 Delta variant triggered a much stronger second epidemic wave in FP than the original Wuhan strain, which was dominant from August 2020 to March 2021. Although previous seroprevalence surveys made it possible to determine the proportion of the population infected by SARS-CoV-2 on the two most populated islands (Tahiti and Moorea) after the first (20.

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Background: Effective Coronavirus Disease 2019 (COVID-19) response relies on good knowledge of population infection dynamics, but owing to under-ascertainment and delays in symptom-based reporting, obtaining reliable infection data has typically required large dedicated local population studies. Although many countries implemented Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) testing among travellers, it remains unclear how accurately arrival testing data can capture international patterns of infection, because those arrival testing data were rarely reported systematically, and predeparture testing was often in place as well, leading to nonrepresentative infection status among arrivals.

Methods And Findings: In French Polynesia, testing data were reported systematically with enforced predeparture testing type and timing, making it possible to adjust for nonrepresentative infection status among arrivals.

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Nitric oxide (NO) is an important signaling molecule involved in many pathophysiological processes. NO mediates vasodilation and blood flow in the arteries, and its action contributes to maintaining vascular homeostasis by inhibiting vascular smooth muscle contraction and growth, platelet aggregation, and leukocyte adhesion to the endothelium. Dietary antioxidants and their metabolites have been found to be directly and/or indirectly involved in the modulation of the intracellular signals that lead to the production of NO.

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Article Synopsis
  • The first SARS-CoV-2 case in French Polynesia was identified on March 10th, 2020, leading to a pause in international flights and effective local transmission control, with only 62 cases reported by mid-July.
  • To safely reopen borders without quarantine, travelers were required to present a negative RT-PCR test before departure and undergo another test four days after arrival, utilizing self-collection kits due to limited medical staff.
  • Between July 15th, 2020, and February 15th, 2021, a surveillance program tested nearly 60,000 samples and found 273 positive cases, while strategies like self-collection and pooling were effective in resource-efficient large-scale screening and detecting variants like
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