TY  - JOUR 
T1  - Barriers and facilitators to influenza vaccination observed by officers of national immunization programs in South America countries with contrasting coverage rates
JO  - Cadernos de Saúde Pública
A1  - González-Block, Miguel Ángel
A1  - Portillo, Sandra Patricia Díaz
A1  - Laguna, Juan Arroyo
A1  - Comes, Yamila
A1  - Crocco, Pedro
A1  - Fachel-Leal, Andréa
A1  - Noboa, Laura
A1  - Knauth, Daniela Riva
A1  - Rodríguez-Zea, Berenice
A1  - Ruoti, Mónica
A1  - Sarti, Elsa
A1  - Puentes, Esteban
SN  - 0102-311X
UL  - 10.1590/0102-311X00045721
VL  - 38 
Y1  - 2022
PB  - Brasil 
ER  -