2 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...
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...