Atlanta
United States
Government of the United States of America - Centers for Disease Control and Prevention (CDC)
influenza, genetic, antigen, incidence, vaccine, effectiveness, subclade K
immunogenicity, pregnancy, influenza vaccines, antibody transfer, HIV, malaria
pregnancy, influenza virus infection, seroconversion
influenza, hemagglutination inhibition titers, Tasso, venipuncture, capillary blood