No abstract available
MeSH terms
-
Adolescent
-
Adult
-
Aged
-
Aged, 80 and over
-
Female
-
Humans
-
Influenza Vaccines / therapeutic use*
-
Influenza, Human / epidemiology*
-
Influenza, Human / prevention & control*
-
Male
-
Middle Aged
-
Portugal / epidemiology
-
Prevalence
-
Risk Assessment / methods*
-
Risk Factors
-
Treatment Outcome
-
Vaccination / statistics & numerical data*