Identifying Multiple Possible Outbreak Sources

The following histogram shows that, in an epidemic of hepatitis A in Ibiza, Spain, in 2001, three groups of cases were identified. The epidemic curve can be devised into 3 subgroups (restaurant attendants, customers of shop-B, and hotel C residents). Subsequently, detailed investigation and case control studies could have been conducted to identify vehicles and risk factors specific to each subgroup.

Source: Instituto Carlos III, Madrid, Spain

FEM PAGE CONTRIBUTORS 2007

Editor

Graham Fraser

Original Authors

Alain Moren

Marta Valenciano

Contributors

Graham Fraser

Lisa Lazareck

Vladimir Prikazsky