Revisiones sistemáticas de la eficacia o efectividad de las vacunas antigripales en el lactante, el niño y el adolescente sano

Influenza vaccines are efficacious and effective in preventing influenza, influenza-like illness, lower respiratory tract illness, otitis media and school absenteeism in healthy infants, children and teenagers. However, their efficacy and effectiveness are lower (or zero) in preventing these conditions in vaccinated contacts.