Publications by authors named "Laurence Morand Joubert"

We report a case of persistent disseminated mpox evolving over >6 months in an HIV/hepatitis B virus co-infected patient in France who had <200 CD4+ cells/mm, pulmonary and hepatic necrotic lesions, persistent viremia, and nasopharyngeal excretion. Clinical outcome was favorable after 90 days of tecovirimat treatment and administration of human vaccinia immunoglobulins.

View Article and Find Full Text PDF

Due to shared routes of transmission, including sexual contact and vertical transmission, HIV-HBV co-infection is common, particularly in sub-Saharan Africa. Measurement of viral load (VL), for both HIV and HBV, plays a critical role for determining their infectious phase and monitoring response to antiviral therapy. Implementation of viral load testing in clinical settings is a significant challenge in resource-limited countries, notably because of cost and availability issues.

View Article and Find Full Text PDF
Article Synopsis
  • This study investigates the immune response to SARS-CoV-2 after COVID-19 infection and vaccination, focusing on anti-RBD antibodies and functional neutralizing antibodies (NAbs).
  • Researchers analyzed samples from different groups, including partially and fully vaccinated individuals as well as those who had COVID-19 with or without vaccination, using advanced testing methods.
  • Results showed that the post-COVID/vaccination group had the strongest immune protection, with a clear link between antibody levels and neutralization ability, and the ichroma™ test proved effective in assessing immunity.
View Article and Find Full Text PDF
Article Synopsis
  • This study investigates COVID-19-associated pulmonary aspergillosis (CAPA) among critically ill patients during the Omicron variant wave, finding it affects 5.1% of patients and 9.1% of those on invasive mechanical ventilation.
  • CAPA patients showed higher rates of immunosuppression and required more intensive care measures, like vasopressors and renal therapy, compared to non-CAPA patients.
  • While CAPA did not significantly impact day-28 mortality, it was linked to longer mechanical ventilation and ICU stays, suggesting a shift in outcomes with emerging SARS-CoV-2 variants.
View Article and Find Full Text PDF

Objectives: Charaterization of the plasma concentrations of antiretrovirals in a 4-days-a-week maintenance treatment strategy in the ANRS-170-QUATUOR study.

Methods: Patients were randomized in two groups receiving triple therapy taken 4-days-ON and 3-days-OFF (4/7) or continuous therapy (7/7). Plasma antiretroviral concentrations were monitored during the 'ON-treatment period' (Day 3 or 4 of the 4-day treatment block) and the 'OFF-treatment period' (Day 3 of the 3-day drug cessation) for the 4/7 group, or before the daily drug intake for the 7/7 group, until week-48 (W48).

View Article and Find Full Text PDF

A case of a male with human immunodeficiency virus with plasma genotyping detecting no resistance and a CRF02_AG subtype had a controlled HIV RNA on antiretroviral therapy since 2010. We introduced intramuscular therapy with cabotegravir and rilpivirine. One month later, his HIV RNA was 1500 copies/mL; genotyping found a subtype B with many mutations.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted on 158 adult patients with acute respiratory failure due to SARS-CoV-2, focusing on the impact of various Omicron sublineages, including BA.2, BA.4/BA.5, and BQ.1.1.
  • Patients infected with the recent BQ.1.1 variant displayed a higher rate of obesity and a lower rate of immunosuppression compared to those with earlier sublineages.
  • Despite these differences in patient characteristics, there was no significant variation in disease severity at ICU admission, organ support needs, or 28-day mortality across the different sublineage groups.
View Article and Find Full Text PDF

Background: In a 4 days/week (4/7 days) maintenance strategy (ANRS-170 QUATUOR trial), the virological impact of an intermittent strategy was assessed by ultrasensitive virological analyses of reservoirs and resistance.

Methods: HIV-1 total DNA, ultra-sensitive plasma viral load (USpVL) and semen VL were measured in the first 121 participants. Sanger and ultra-deep sequencing (UDS) were performed on the HIV-1 genome (Illumina technology) according to the ANRS consensus.

View Article and Find Full Text PDF

While Hepatitis B virus (HBV) and the human immunodeficiency virus (HIV) are endemic in West Africa, the prevalence of HBV/HIV coinfection and their associated risk factors in children remains unclear. In this review, we sought to assess HBsAg seroprevalence among 0- to 16-year-olds with and without HIV in West African countries and the risk factors associated with HBV infection in this population. Research articles between 2000 and 2021 that reported the prevalence of HBV and associated risk factors in children in West Africa were retrieved from the literature using the Africa Journals Online (AJOL), PubMed, Google Scholar, and Web of Science databases as search tools.

View Article and Find Full Text PDF
Article Synopsis
  • Integrase inhibitors (INIs) are effective for treating HIV but there is limited knowledge about drug resistance in West African children with HIV/AIDS.
  • A study involving 107 HIV-1-infected children from Benin and Mali found no major mutations linked to INI resistance, even among those who had undergone antiretroviral therapy.
  • However, several accessory resistance mutations were identified, suggesting while INIs may be a safe treatment option, monitoring for resistance patterns is necessary.
View Article and Find Full Text PDF
Article Synopsis
  • * Recovered COVID-19 patients who received one vaccine dose showed the strongest neutralizing response, while vaccinated naïve patients had high levels against earlier variants but lower activity against the Omicron variant.
  • * The surrogate assays demonstrated a good correlation with VNT results, indicating they could serve as reliable alternatives for analyzing neutralization capabilities on a larger scale, especially against resistant variants like Beta and Omicron.
View Article and Find Full Text PDF

We investigated the frequency, distribution, and risk factors of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) environmental contamination around infected patients during the first and third wave of the coronavirus disease 2019 pandemic. The shedding of SARS-CoV-2 in rooms of infected patients was limited in our hospital setting.

View Article and Find Full Text PDF

Acute respiratory distress syndrome (ARDS) alveolar environment induced a pro-repair anti-inflammatory macrophage polarization. However, patients with coronavirus disease 2019 (COVID-19) ARDS frequently exhibit a huge lung inflammation and present pulmonary scars and fibrosis more frequently than patients with non-COVID-19 ARDS, suggesting that the COVID-19 ARDS alveolar environment may drive a more inflammatory or pro-fibrotic macrophage polarization. This study aimed to determine the effect of the COVID-19 ARDS alveolar environment on macrophage polarization.

View Article and Find Full Text PDF
Article Synopsis
  • * A study of 259 patients revealed distinct clinical profiles between those infected with Omicron and those with Delta, but no significant impact of variant sublineages on 28-day mortality rates.
  • * Immunocompromised patients infected with Omicron experienced higher mortality rates compared to non-immunocompromised individuals, despite many having received at least two vaccine doses and showing poor immune responses.
View Article and Find Full Text PDF
Article Synopsis
  • The study examined healthcare-associated COVID-19 (HA-COVID-19) from September to November 2020 at Sorbonne University Hospital, revealing 209 reported cases and a significant mortality rate of 31.5% among HA-COVID-19 patients.
  • The incidence of HA-COVID-19 was closely linked to community-associated cases (CA-COVID-19) and infections among healthcare workers (HCWs), indicating considerable nosocomial transmission.
  • Whole-genome sequencing (WGS) played a crucial role in cluster investigations, helping to identify transmission routes and excluding a third of initially assigned cases, thus aiding in enhancing infection prevention and control strategies.
View Article and Find Full Text PDF
Article Synopsis
  • The study focused on the SARS-CoV-2 variant α, which became a concern in 2021, examining its genetic diversity and connection to severe COVID-19 outcomes.
  • Conducted in 11 ICUs in Greater Paris, it analyzed 413 patients and found that variant α was prevalent but did not lead to higher mortality compared to pre-existing variants or other variants.
  • Despite differences in age and underlying health conditions among patients with different variants, the research concluded that there was no significant link between specific viral mutations and day-28 mortality rates.
View Article and Find Full Text PDF

The local immune-inflammatory response elicited by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is still poorly described, as well as the extent to which its characteristics may be associated with the outcome of critical Coronavirus disease 2019 (COVID-19). In this prospective monocenter study, all consecutive COVID-19 critically ill patients admitted from February to December 2020 and explored by fiberoptic bronchoscopy with bronchoalveolar lavage (BAL) were included. Biological assays, including digital ELISA cytokine profiling and targeted eicosanoid metabolomic analysis, were performed on paired blood and BAL fluid (BALF).

View Article and Find Full Text PDF

Meningitis/encephalitis (ME) syndromic diagnostic assays can be applied for the rapid one-step detection of the most common pathogens in cerebrospinal fluid (CSF). However, the comprehensive performance of multiplex assays is still under evaluation. In our multisite university hospital of eastern Paris, France, ME syndromic testing has been gradually implemented since 2017 for patients with neurological symptoms presenting to an adult or pediatric emergency unit.

View Article and Find Full Text PDF

Background: Intermittent (on 4 days per week) antiretroviral therapy (ART) for patients with HIV-1 might be more convenient, better tolerated, and cheaper than continuous treatment. We aimed to establish the efficacy and safety of a 4-days-on and 3-days-off (intermittent) maintenance regimen versus a standard 7 day (continuous) maintenance regimen.

Methods: In a randomised, open-label, multicentre, parallel, non-inferiority trial, we randomly assigned (1:1) adults with HIV-1 infection with a plasma viral load (pVL) of less than 50 copies per mL for more than 12 months and no drug-resistance mutations to either the intermittent regimen or their existing continuous maintenance regimen, with stratification according to third therapeutic agent (protease inhibitor, non-nucleoside reverse transcriptase inhibitor, or integrase-strand transfer inhibitor).

View Article and Find Full Text PDF