Results 1 to 10 of about 138,076 (264)

SARS-CoV-2 infection in Africa: a systematic review and meta-analysis of standardised seroprevalence studies, from January 2020 to December 2021

BMJ Global Health, 2022
Introduction Estimating COVID-19 cumulative incidence in Africa remains problematic due to challenges in contact tracing, routine surveillance systems and laboratory testing capacities and strategies.
, Anthony Nardone, Jesse Papenburg, Marta Valenciano, Hude Quan, Maria D Van Kerkhove, Didier K Ekouevi, Tyler Williamson, Shobna Sawry, Xiaomeng Ma, Ambrose Talisuna, Thierno Balde, Ines Vigan-Womas, David Buckeridge, Halidou Tinto, Michael Liu, Tingting Yan, Matthew P Cheng, Joseph Okeibunor, Samiratou Ouedraogo, Francine Ntoumi, Cheikh Talla, David Clifton, Tiffany G Harris, Ayôla A Adegnika, Lorenzo Subissi, Laura Steinhardt, Niklas Bobrovitz, Isidore T Traore, Timothy G Evans, Judy Chen, Cedric P Yansouni, Cheryl Cohen, Jason M Mwenda, Nsenga Ngoy, Hannah C Lewis, Harriet Ware, Mairead Whelan, Zihan Li, Brianna Cheng, Kim Noel, Christian Cao, Mercedes Yanes-Lane, Belinda L Herring, Rahul K Arora, Isabel Bergeri, Rafiou Adamou, Samira Z Assoumou, Rosemary A Audu, Jacob S Barnor, Enyew Birru, Henry K Bosa, Emily L Boucher, Annie Chauma-Mwale, Tienhan S Dabakuyo-Yonli, Gabriel Deveaux, Boly Diop, Titus H Divala, Emily K Dokubo, Irene O Donkor, Claire Donnici, Nathan Duarte, Natalie A Duarte, Paulin N Essone, Lee Fairlie, Ousmane Faye, Anne von Gottberg, Natasha Ilincic, Elsie A Ilori, Jackie Kleynhans, Dayoung Kim, Olatunji M Kolawole, Jambo C Kondwani, Emma Loeschnik, Sheila Makiala-Mandanda, Alexandre Manirakiza, Pinyi N Mawien, Portia C Mutevedzi, Edgard B Ngoungou, Eric M Osoro, Sandrine L Oyegue, Sara Perlman-Arrow, Hannah P Rahim, Karampreet Sachathep, Mitchell Segal, Anabel Selemon, Judith Shang, Joel F Djoba Siawaya, Kristen A Stafford, Joe A Theu, Caseng Zhang   +90 more
doaj   +1 more source

Seroprevalence of antibodies to SARS-CoV-2 among blood donors in the early months of the pandemic in Saudi Arabia

International Journal of Infectious Diseases, 2021
Background: Serologic testing provides better understanding of SARS-CoV-2 prevalence and its transmission. This study was an investigation of the prevalence of antibodies to SARS-CoV-2 among blood donors in Saudi Arabia.
Ayman Banjar, Jaffar A. Al-Tawfiq, Amaal Alruwaily, Haleema Alserehi, Ada Al-Qunaibet, Rehab Alaswad, Hind Almutlaq, Abdullah Almudaiheem, Abdullah T. Khojah, Faisal Alsaif, Shaza Karim Almolad, Saeed Alqahtani, Abdullah AlJurayyan, Abdullah Alotaibi, Safar Almalki, Yousef Abuhaimed, Abdullah Alkhashan, Amal Alfaifi, Khaled Alabdulkareem, Hani Jokhdar, Abdullah Assiri, Sami Almudarra   +21 more
doaj   +1 more source

Epidemiology of Coxiella burnetii infection in Africa: a OneHealth systematic review [PDF]

, 2014
Background: Q fever is a common cause of febrile illness and community-acquired pneumonia in resource-limited settings. Coxiella burnetii, the causative pathogen, is transmitted among varied host species, but the epidemiology of the organism in Africa
A Benkirane, A Benslimani, A Corwin, A Omezzine-Letaief, A OmezzineLetaief, A Rekiki, A Znazen, AA Adesiyun, AA Adesiyun, AP Schutte, AR Kamga-Waladjo, B Adu-Addai, B Gummow, BD Perry, BP Mmbando, C Geiger, C Karema, D Schellenberg, E Angelakis, E Schelling, Elizabeth A. Reddy, EM Scrimgeour, F Scolamacchia, G Maartens, GA Ki-Zerbo, GM Blanc, H Tissot-Dupont, H Tissot-Dupont, HG Nahed, HT Dupont, J Domenech, J Julvez, JA Crump, JB Haumesser, JG Ayres, JH McQuiston, Jo E. B. Halliday, John A. Crump, L Epelboin, L Luoto, M Berri, M Georgiev, M Maurin, M Prabhu, M. Kariuki Njenga, Matthew P. Rubach, MO Hussien, N Kaabia, NM Anstey, P Brouqui, PE Fournier, R Gidel, R Gidel, R Kobbe, S Koulla-Shiro, S Koulla-Shiro, S Mazeri, Sarah Cleaveland, Sky Vanderburg, SMS Amal, SP Fiorillo, SR Manock, W van der Hoek, W van der Hoek, W van der Hoek, WF Amin, WP O'Meara, Y Maurice   +67 more
core   +16 more sources

Pediatric SARS-CoV-2 Seroprevalence, Oregon, USA, November 1, 2020–June 30, 2022

Emerging Infectious Diseases, 2023
We estimated SARS-CoV-2 seroprevalence in children in Oregon, USA, at 6 time points. Seroprevalence increased linearly during November 2020–December 2021 and peaked in February 2022 at 38.8% (95% CI 32.8%–46.5%).
Rebecca A. Falender, Paul G. Mitchell, Judith A. Guzman-Cottrill, Paul R. Cieslak, Melissa Sutton   +4 more
doaj   +1 more source

Confidence Intervals for Seroprevalence

Statistical Science, 2022
This paper concerns the construction of confidence intervals in standard seroprevalence surveys. In particular, we discuss methods for constructing confidence intervals for the proportion of individuals in a population infected with a disease using a sample of antibody test results and measurements of the test's false positive and false negative rates.
DiCiccio, Thomas J., Ritzwoller, David M., Romano, Joseph P., Shaikh, Azeem M.   +3 more
openaire   +2 more sources

Heterogeneous evolution of SARS-CoV-2 seroprevalence in school-age children

Swiss Medical Weekly, 2023
BACKGROUND: Much remains unknown regarding the evolution of SARS-CoV-2 seroprevalence and variability in seropositive children in districts, schools and classes as only a few school-based cohort studies exist.
Sarah R. Haile, Alessia Raineri, Sonja Rueegg, Thomas Radtke, Agne Ulyte, Milo A. Puhan, Susi Kriemler   +6 more
doaj   +1 more source

Estimating SARS-CoV-2 seroprevalence

Journal of the Royal Statistical Society Series A: Statistics in Society, 2023
Abstract Governments and public health authorities use seroprevalence studies to guide responses to the COVID-19 pandemic. Seroprevalence surveys estimate the proportion of individuals who have detectable SARS-CoV-2 antibodies. However, serologic assays are prone to misclassification error, and non-probability sampling may induce ...
Samuel P Rosin, Bonnie E Shook-Sa, Stephen R Cole, Michael G Hudgens   +3 more
openaire   +4 more sources

Seroprevalence of Trypanosoma evansi in camels using CATT/T. evansi technique in Borno and Yobe states, Nigeria

Parasite Epidemiology and Control, 2021
Trypanosoma evansi is an important camel pathogen with dissimilar mammalian hosts and is the most widely distributed pathogenic animals' trypanosomes worldwide that affects domesticated animals.
Falmata Kyari, PhD, Albert Wulari Mbaya, PhD, Abdullahi Abubakar Biu, PhD, Lawan Adamu, PhD, Okoro Ogbonna Dennis, MVSc   +4 more
doaj   +1 more source

Surveillance of SARS-CoV-2 antibodies of patients in the local affected area during Wuhan lockdown

BMC Infectious Diseases, 2022
Highlights 1. Two months after the COVID-19 outbreak in Wuhan, the seroprevalence for IgM and IgG in the convalescent patients was 31.82% and 77.27%, respectively.
Yueting Tang, Jiayu Sun, Yumeng Yuan, Fen Yao, Bokun Zheng, Gui Yang, Wen Xie, Guangming Ye, Zhen Li, Xiaoyang Jiao, Yirong Li   +10 more
doaj   +1 more source

Spanish HCMV Seroprevalence in the 21st Century

Viruses, 2023
Human cytomegalovirus (HCMV) is linked to age-related diseases like cardiovascular disease, neurodegenerative conditions, and cancer. It can also cause congenital defects and severe illness in immunocompromised individuals.
Pablo Álvarez-Heredia, Irene Reina-Alfonso, José Joaquín Domínguez-del-Castillo, Fakhri Hassouneh, Carmen Gutiérrez-González, Alexander Batista-Duharte, Ana-Belén Pérez, Fernando Sarramea, María José Jaén-Moreno, Cristina Camacho-Rodríguez, Raquel Tarazona, Rafael Solana, Juan Molina, Alejandra Pera   +13 more
doaj   +1 more source