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  1. Article: On the SARS-CoV-2 "Variolation Hypothesis": No Association Between Viral Load of Index Cases and COVID-19 Severity of Secondary Cases.

    Trunfio, Mattia / Longo, Bianca Maria / Alladio, Francesca / Venuti, Francesco / Cerutti, Francesco / Ghisetti, Valeria / Bonora, Stefano / Di Perri, Giovanni / Calcagno, Andrea

    Frontiers in microbiology

    2021  Volume 12, Page(s) 646679

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2021-03-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2021.646679
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Determinants of SARS-CoV-2 Contagiousness in Household Contacts of Symptomatic Adult Index Cases.

    Trunfio, Mattia / Richiardi, Lorenzo / Alladio, Francesca / Staffilano, Elena / Longo, Bianca / Venuti, Francesco / Ghisetti, Valeria / Burdino, Elisa / Bonora, Stefano / Vineis, Paolo / Di Perri, Giovanni / Calcagno, Andrea

    Frontiers in microbiology

    2022  Volume 13, Page(s) 829393

    Abstract: Background: Identifying determinants of the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) transmission in settings of contagion is fundamental to inform containment strategies. We assessed SARS-CoV-2 cycle threshold value (Ct) from ... ...

    Abstract Background: Identifying determinants of the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) transmission in settings of contagion is fundamental to inform containment strategies. We assessed SARS-CoV-2 cycle threshold value (Ct) from the first diagnostic nasal-pharyngeal swab of symptomatic index cases and which demographic or clinical characteristics among cases and contacts are associated with transmission risk within households.
    Methods: This is a retrospective prevalence study on secondary SARS-CoV-2 cases (SC) among the household contacts of symptomatic adult index cases randomly sampled from all the SARS-CoV-2-positive diagnostic nasopharyngeal swabs analyzed at our regional referral hospital (Amedeo di Savoia Hospital, Turin, Italy) in March, 2020. Index cases underwent a telephone survey to collect their demographic and clinical data and all their household contacts. The Ct value of RdRp gene from the first diagnostic swab of index cases was recorded and index cases were grouped according to Ct tertiles (A < first tertile, first ≤ B ≤ second tertile, C ≥ second tertile).
    Results: Index (
    Conclusion: In confined transmission settings such as households, PCR Ct values may inform on the contagiousness of infected subjects and age may modulate transmission/contagion risk.
    Language English
    Publishing date 2022-04-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.829393
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Diagnostic SARS-CoV-2 Cycle Threshold Value Predicts Disease Severity, Survival, and Six-Month Sequelae in COVID-19 Symptomatic Patients.

    Trunfio, Mattia / Venuti, Francesco / Alladio, Francesca / Longo, Bianca Maria / Burdino, Elisa / Cerutti, Francesco / Ghisetti, Valeria / Bertucci, Roberto / Picco, Carlo / Bonora, Stefano / Di Perri, Giovanni / Calcagno, Andrea

    Viruses

    2021  Volume 13, Issue 2

    Abstract: To date, there is no severe acute respiratory syndrome coronavirus 2-(SARS-CoV-2)-specific prognostic biomarker available. We assessed whether SARS-CoV-2 cycle threshold (Ct) value at diagnosis could predict novel CoronaVirus Disease 2019 (COVID-19) ... ...

    Abstract To date, there is no severe acute respiratory syndrome coronavirus 2-(SARS-CoV-2)-specific prognostic biomarker available. We assessed whether SARS-CoV-2 cycle threshold (Ct) value at diagnosis could predict novel CoronaVirus Disease 2019 (COVID-19) severity, clinical manifestations, and six-month sequelae. Hospitalized and outpatient cases were randomly sampled from the diagnoses of March 2020 and data collected at 6 months by interview and from the regional database for COVID-19 emergency. Patients were stratified according to their RNA-dependent-RNA-polymerase Ct in the nasopharyngeal swab at diagnosis as follows: Group A ≤ 20.0, 20.0 < group B ≤ 28.0, and Group C > 28.0. Disease severity was classified according to a composite scale evaluating hospital admission, worst oxygen support required, and survival. Two hundred patients were included, 27.5% in Groups A and B both, 45.0% in Group C; 90% of patients were symptomatic and 63.7% were hospitalized. The median time from COVID-19 onset to swab collection was five days. Lethality, disease severity, type, and number of signs and symptoms, as well as six-month sequelae distributed inversely among the groups with respect to SARS-CoV-2 Ct. After controlling for confounding, SARS-CoV-2 Ct at diagnosis was still associated with COVID-19-related death (
    MeSH term(s) Adult ; Aged ; COVID-19/diagnosis ; COVID-19/pathology ; Cross-Sectional Studies ; Disease Progression ; Female ; Hospitalization ; Humans ; Italy/epidemiology ; Male ; Middle Aged ; Nasopharynx/virology ; Retrospective Studies ; SARS-CoV-2/isolation & purification ; Severity of Illness Index ; Viral Load
    Language English
    Publishing date 2021-02-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13020281
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Long-term outcomes of the global tuberculosis and COVID-19 co-infection cohort.

    Casco, Nicolas / Jorge, Alberto Levi / Palmero, Domingo Juan / Alffenaar, Jan-Willem / Fox, Greg J / Ezz, Wafaa / Cho, Jin-Gun / Denholm, Justin / Skrahina, Alena / Solodovnikova, Varvara / Arbex, Marcos Abdo / Alves, Tatiana / Rabahi, Marcelo Fouad / Pereira, Giovana Rodrigues / Sales, Roberta / Silva, Denise Rossato / Saffie, Muntasir M / Salinas, Nadia Escobar / Miranda, Ruth Caamaño /
    Cisterna, Catalina / Concha, Clorinda / Fernandez, Israel / Villalón, Claudia / Vera, Carolina Guajardo / Tapia, Patricia Gallegos / Cancino, Viviana / Carbonell, Monica / Cruz, Arturo / Muñoz, Eduardo / Muñoz, Camila / Navarro, Indira / Pizarro, Rolando / Cristina Sánchez, Gloria Pereira / Vergara Riquelme, Maria Soledad / Vilca, Evelyn / Soto, Aline / Flores, Ximena / Garavagno, Ana / Bahamondes, Martina Hartwig / Merino, Luis Moyano / Pradenas, Ana María / Revillot, Macarena Espinoza / Rodriguez, Patricia / Salinas, Angeles Serrano / Taiba, Carolina / Valdés, Joaquín Farías / Subiabre, Jorge Navarro / Ortega, Carlos / Palma, Sofia / Castillo, Patricia Perez / Pinto, Mónica / Bidegain, Francisco Rivas / Venegas, Margarita / Yucra, Edith / Li, Yang / Cruz, Andres / Guelvez, Beatriz / Victoria Plaza, Regina / Tello Hoyos, Kelly Yoana / Cardoso-Landivar, José / Van Den Boom, Martin / Andréjak, Claire / Blanc, François-Xavier / Dourmane, Samir / Froissart, Antoine / Izadifar, Armine / Rivière, Frédéric / Schlemmer, Frédéric / Manika, Katerina / Diallo, Boubacar Djelo / Hassane-Harouna, Souleymane / Artiles, Norma / Mejia, Licenciada Andrea / Gupta, Nitesh / Ish, Pranav / Mishra, Gyanshankar / Patel, Jigneshkumar M / Singla, Rupak / Udwadia, Zarir F / Alladio, Francesca / Angeli, Fabio / Calcagno, Andrea / Centis, Rosella / Codecasa, Luigi Ruffo / De Lauretis, Angelo / Esposito, Susanna M R / Formenti, Beatrice / Gaviraghi, Alberto / Giacomet, Vania / Goletti, Delia / Gualano, Gina / Matteelli, Alberto / Migliori, Giovanni Battista / Motta, Ilaria / Palmieri, Fabrizio / Pontali, Emanuele / Prestileo, Tullio / Riccardi, Niccolò / Saderi, Laura / Saporiti, Matteo / Sotgiu, Giovanni / Spanevello, Antonio / Stochino, Claudia / Tadolini, Marina / Torre, Alessandro / Villa, Simone / Visca, Dina / Kurhasani, Xhevat / Furjani, Mohammed / Rasheed, Najia / Danila, Edvardas / Diktanas, Saulius / Ridaura, Ruy López / Luna López, Fátima Leticia / Torrico, Marcela Muñoz / Rendon, Adrian / Akkerman, Onno W / Chizaram, Onyeaghala / Al-Abri, Seif / Alyaquobi, Fatma / Althohli, Khalsa / Aguirre, Sarita / Teixeira, Rosarito Coronel / De Egea, Viviana / Irala, Sandra / Medina, Angélica / Sequera, Guillermo / Sosa, Natalia / Vázquez, Fátima / Llanos-Tejada, Félix K / Manga, Selene / Villanueva-Villegas, Renzo / Araujo, David / Sales Marques, Raquel DuarteTânia / Socaci, Adriana / Barkanova, Olga / Bogorodskaya, Maria / Borisov, Sergey / Mariandyshev, Andrei / Kaluzhenina, Anna / Vukicevic, Tatjana Adzic / Stosic, Maja / Beh, Darius / Ng, Deborah / Ong, Catherine W M / Solovic, Ivan / Dheda, Keertan / Gina, Phindile / Caminero, José A / De Souza Galvão, Maria Luiza / Dominguez-Castellano, Angel / García-García, José-María / Pinargote, Israel Molina / Fernandez, Sarai Quirós / Sánchez-Montalvá, Adrián / Huguet, Eva Tabernero / Murguiondo, Miguel Zabaleta / Bart, Pierre-Alexandre / Mazza-Stalder, Jesica / D'Ambrosio, Lia / Kamolwat, Phalin / Bakko, Freya / Barnacle, James / Bird, Sophie / Brown, Annabel / Chandran, Shruthi / Killington, Kieran / Man, Kathy / Papineni, Padmasayee / Ritchie, Flora / Tiberi, Simon / Utjesanovic, Natasa / Zenner, Dominik / Hearn, Jasie L / Heysell, Scott / Young, Laura

    The European respiratory journal

    2023  Volume 62, Issue 5

    Abstract: Background: Longitudinal cohort data of patients with tuberculosis (TB) and coronavirus disease 2019 (COVID-19) are lacking. In our global study, we describe long-term outcomes of patients affected by TB and COVID-19.: Methods: We collected data from ...

    Abstract Background: Longitudinal cohort data of patients with tuberculosis (TB) and coronavirus disease 2019 (COVID-19) are lacking. In our global study, we describe long-term outcomes of patients affected by TB and COVID-19.
    Methods: We collected data from 174 centres in 31 countries on all patients affected by COVID-19 and TB between 1 March 2020 and 30 September 2022. Patients were followed-up until cure, death or end of cohort time. All patients had TB and COVID-19; for analysis purposes, deaths were attributed to TB, COVID-19 or both. Survival analysis was performed using Cox proportional risk-regression models, and the log-rank test was used to compare survival and mortality attributed to TB, COVID-19 or both.
    Results: Overall, 788 patients with COVID-19 and TB (active or sequelae) were recruited from 31 countries, and 10.8% (n=85) died during the observation period. Survival was significantly lower among patients whose death was attributed to TB and COVID-19
    Conclusions: In our global cohort, death was the outcome in >10% of patients with TB and COVID-19. A range of demographic and clinical predictors are associated with adverse outcomes.
    MeSH term(s) Humans ; Male ; COVID-19/complications ; HIV Infections/complications ; Coinfection ; Risk Factors ; Tuberculosis, Miliary ; Retrospective Studies
    Language English
    Publishing date 2023-11-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 639359-7
    ISSN 1399-3003 ; 0903-1936
    ISSN (online) 1399-3003
    ISSN 0903-1936
    DOI 10.1183/13993003.00925-2023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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