Case-control studies to assess vaccine effectiveness? Yes, but not this way.
Bernaola
Enrique
E
Herranz
Mercedes
M
Clerigue
Nuria
N
Gil
Francisco
F
D016022:Case-Control Studies; D006801:Humans; D011008:Pneumococcal Infections / Q000453:epidemiology / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D012307:Risk Factors; D015983:Selection Bias
D022242:Pneumococcal Vaccines