The vaccination campaign against 2009 pandemic influenza A(H1N1) and its continued importance in view of the uncertainty surrounding the risk associated with the pandemic

摘要

Carefully designed sero-epidemiological surveys may accu- rately describe the epidemic evolution although they usu- ally come late. Mathematical models can be also used to estimate the approximate number of infected people [4]. We have recently described the use of telephone surveys in assisting in such estimations [1].