5 documents found, page 1 of 1
Seroprevalence of Protective Antibodies Against Influenza and the Reduction of ...
Guiomar, R; Pereira da Silva, S; Costa, I; Conde, P; Cristóvão, P; Rodrigues, AP; Fernandes, A; Dias, AP; Couto, AR; Ramos, A; Moita, C; Rodrigues, CBackground: Seroepidemiological studies provide estimates of population-level immunity, prevalence/incidence of infections, and evaluation of vaccination programs. We assessed the seroprevalence of protective antibodies against influenza and evaluated the correlation of seroprevalence with the cumulative annual influenza incidence rate. Methods: We conducted an annual repeated cross-sectional seroepidemiologica...
The impact of COVID-19 on breastfeeding rates: An international cross-sectional...
Ganho-Avila, A; Guiomar, R; Sobral, M; Pacheco, F; Caparros-Gonzalez, RA; Diaz-Louzao, C; Motrico, E; Domínguez-Salas, S; Mesquita, A; Costa, RBackground: Breastfeeding promotes children's health and is associated with positive effects to maternal physical and mental health. Uncertainties regarding SARS-CoV-2 transmission led to worries experienced by women and health professionals which impacted breastfeeding plans. We aimed to investigate the im-pact of self-reported and country-specific factors on breastfeeding rates during the COVID-19 pandemic. M...
Seroprevalence of SARS-CoV-2 Infection in Portugal in May-July 2020: Results of...
Kislaya, I; Gonçalves, P; Barreto, M; Sousa, R; Garcia, AC; Matos, R; Guiomar, R; Rodrigues, AP; Dias, AIntroduction: The aim of this study was to estimate and describe the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) specific antibodies (immunoglobulin M and/or immunoglobulin G) in Portugal in May-July 2020. Material and methods: A cross-sectional seroepidemiological survey was developed after the peak of the first epidemic wave on a sample of 2301 Portuguese residents, aged 1 year ...
Cross-Protection to New Drifted Influenza A(H3) Viruses and Prevalence of Prote...
Guiomar, R; Pereira da Silva, S; Conde, P; Cristóvão, P; Maia, AC; Pechirra, P; Rodrigues, AP; Nunes, B; Milho, L; Coelho, AP; Fernandes, A; Caseiro, PINTRODUCTION: Immune profile for influenza viruses is highly changeable over time. Serological studies can assess the prevalence of influenza, estimate the risk of infection, highlight asymptomatic infection rate and can also provide data on vaccine coverage. The aims of the study were to evaluate pre-existing cross-protection against influenza A(H3) drift viruses and to assess influenza immunity in the Portugu...
Improving Influenza Surveillance in Portuguese Preschool Children by Parents' R...
Paixão, P; Piedade, C; Papoila, AL; Caires, I; Pedro, C; Santos, M; Silvestre, MJ; Brum, L; Nunes, B; Guiomar, R; Curran, M; Carvalho, A; Marques, TInfluenza surveillance is usually based on nationally organized sentinel networks of physicians and on hospital reports. This study aimed to test a different report system, based on parents' phone contact to the research team and in home collection of samples by a dedicated team. The identification of influenza and other respiratory viruses in children who attended a Hospital Emergency Department was also recor...