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Coral reefs in the Mahafaly Seascape (SW Madagascar) as potential climate refugia following the 2024 mass bleaching event [PDF]

PeerJ
The southwesternmost coast of Madagascar, including the Mahafaly seascape, is home to some of the country’s most ecologically and culturally important coral reefs, which remain largely understudied.
Mahery Randrianarivo, Solotahiana Rakotomanga, Fanja Razafindramasy, Danny Kornelio Ravelojaona, Tahiry Ranaivoson, Domoina Rakotomalala, Rémi Ratsimbazafy   +6 more
doaj   +3 more sources

SARS-CoV-2 antibody seroprevalence follow-up in Malagasy blood donors during the 2020 COVID-19 Epidemic

EBioMedicine, 2021
Background: The incidence of the 2020 COVID-19 epidemic in Africa seems to be different from that of the rest of the world, however its true extent is probably underestimated. Conducting population based sero-surveys during the epidemic has moreover been
Matthieu Schoenhals, Niry Rabenindrina, Jean Marius Rakotondramanga, Philippe Dussart, Rindra Randremanana, Jean-Michel Heraud, Soa Fy Andriamandimby, Paquerette Hanitriniala Sahondranirina, Manuela Christophère Andriamahatana Vololoniaina, Fidiniana Mamy Randriatsarafara, Voahangy Rasolofo, Zely Arivelo Randriamanantany, André Spiegel   +12 more
doaj   +1 more source

Using a multiplex serological assay to estimate time since SARS-CoV-2 infection and past clinical presentation in malagasy patients

Heliyon, 2023
Background: The world is facing a 2019 coronavirus (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In this context, efficient serological assays are needed to accurately describe the humoral responses against ...
Mame Diarra Bousso Ndiaye, Lova Tsikiniaina Rasoloharimanana, Solohery Lalaina Razafimahatratra, Rila Ratovoson, Voahangy Rasolofo, Paulo Ranaivomanana, Laurent Raskine, Jonathan Hoffmann, Rindra Randremanana, Niaina Rakotosamimanana, Matthieu Schoenhals   +10 more
doaj   +1 more source

Seroprevalence of IgG Antibodies Directed against Dengue, Chikungunya and West Nile Viruses and Associated Risk Factors in Madagascar, 2011 to 2013

Viruses, 2023
Arboviruses have been shown to circulate in Madagascar, including West Nile, dengue, and chikungunya viruses, though the extent of their circulation remains poorly documented.
Anaïs Broban, Marie-Marie Olive, Michael Luciano Tantely, Anne-Claire Dorsemans, Fanjasoa Rakotomanana, Jean-Pierre Ravalohery, Christophe Rogier, Jean-Michel Heraud, Soa Fy Andriamandimby   +8 more
doaj   +1 more source

Cross-sectional cycle threshold values reflect epidemic dynamics of COVID-19 in Madagascar

Epidemics, 2022
As the national reference laboratory for febrile illness in Madagascar, we processed samples from the first epidemic wave of COVID-19, between March and September 2020.
Soa Fy Andriamandimby, Cara E. Brook, Norosoa Razanajatovo, Tsiry H. Randriambolamanantsoa, Jean-Marius Rakotondramanga, Fidisoa Rasambainarivo, Vaomalala Raharimanga, Iony Manitra Razanajatovo, Reziky Mangahasimbola, Richter Razafindratsimandresy, Santatra Randrianarisoa, Barivola Bernardson, Joelinotahiana Hasina Rabarison, Mirella Randrianarisoa, Frédéric Stanley Nasolo, Roger Mario Rabetombosoa, Anne-Marie Ratsimbazafy, Vololoniaina Raharinosy, Aina H. Rabemananjara, Christian H. Ranaivoson, Helisoa Razafimanjato, Rindra Randremanana, Jean-Michel Héraud, Philippe Dussart   +23 more
doaj   +1 more source

Excess mortality associated with the COVID-19 pandemic during the 2020 and 2021 waves in Antananarivo, Madagascar

BMJ Global Health, 2023
Introduction COVID-19-associated mortality remains difficult to estimate in sub-Saharan Africa because of the lack of comprehensive systems of death registration. Based on death registers referring to the capital city of Madagascar, we sought to estimate
Jean-Michel Heraud, Joelinotahiana Hasina RABARISON, C Jessica Metcalf, Andres Garchitorena, Jean Marius Rakotondramanga, Rila Ratovoson, Bruno Masquelier, Anjaraso Maharavo Rasoanomenjanahary, Anou Dreyfus, Fidisoa Rasambainarivo, Norosoa Harline Razanajatovo, Soa Fy Andriamandimby, Vincent Lacoste, Philippe Dussart   +13 more
doaj   +1 more source

Factors Associated with Carriage of Enteropathogenic and Non-Enteropathogenic Viruses: A Reanalysis of Matched Case-Control Data from the AFRIBIOTA Site in Antananarivo, Madagascar

Pathogens, 2023
Environmental Enteric Dysfunction (EED) is an associate driver of stunting in poor settings, and intestinal infections indirectly contribute to the pathophysiology underlying EED.
Iony Manitra Razanajatovo, Lova Andrianomiadana, Azimdine Habib, Mirella Malala Randrianarisoa, Helisoa Razafimanjato, Maheninasy Rakotondrainipiana, Prisca Andriantsalama, Ravaka Randriamparany, Soa Fy Andriamandimby, Pascale Vonaesch, Philippe Jean Sansonetti, Vincent Lacoste, Rindra Vatosoa Randremanana, Jean-Marc Collard, Jean-Michel Heraud, on behalf of the Afribiota Investigators   +15 more
doaj   +1 more source

Longitudinal Variations of M. tuberculosis-Induced IFN-γ Responses in HIV-Negative Pregnant Women Exposed to Tuberculosis

Frontiers in Immunology, 2021
IntroductionPregnancy triggers an alteration of the immune functions and increases the risk of developing the active tuberculosis (TB) symptoms in exposed women. The effect of pregnancy on the Mycobacterium tuberculosis-specific immune responses used for
Paulo Ranaivomanana, Rila Ratovoson, Crisca Razafimahatratra, Arimanitra Razafimahefa, Jonathan Hoffmann, Perlinot Herindrainy, Julio Rakotonirina, Niaina Rakotosamimanana   +7 more
doaj   +1 more source

Different PPD-stimulated cytokine responses from patients infected with genetically distinct Mycobacterium tuberculosis complex lineages

International Journal of Infectious Diseases, 2021
Objectives: The genetic diversity of Mycobacterium tuberculosis complex (MTBC) influences the immune response of the host, which may affect the immunodiagnostic tests and biomarker assessment studies used for tuberculosis (TB).
Paulo Ranaivomanana, Marie Sylvianne Rabodoarivelo, Mame Diarra Bousso Ndiaye, Niaina Rakotosamimanana, Voahangy Rasolofo   +4 more
doaj   +1 more source

Genome-based insights into the resistomes and mobilomes of two Providencia rettgeri strains isolated from wound infections in Madagascar

Journal of Global Antimicrobial Resistance, 2020
Objectives: A molecular analysis was performed of two Providencia rettgeri (P. rettgeri) strains (Pr 297 and Pr 269) collected in 2007 and 2009 from wound swabs of patients admitted to the intensive care units at Joseph Ravoangy Andrianavalona hospital ...
Pierrette Landrie Simo Tchuinte, Mamitina Alain Noah Rabenandrasana, Lovasoa Ramparany, Elisoa Ratsima, Vincent Enouf, Frédérique Randrianirina, Jean-Marc Collard   +6 more
doaj   +1 more source