Related Experiment Video
Updated: May 14, 2026

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Large measles outbreak in Geneva, Switzerland, January to August 2011: descriptive epidemiology and demonstration of
E Delaporte1, C A Wyler Lazarevic, A Iten
1Epidemiology and infectious diseases section, Cantonal Health Service, General Directorate for Health, Geneva, Switzerland.
Abstract:
Between January and August 2011, the canton of Geneva, Switzerland, experienced a large measles outbreak with 219 cases (47 cases per 100,000 inhabitants) in the context of an extensive epidemic in a neighbouring region of France. Most cases were young adults (median age: 18 years), often unaware of their vaccination status. The vast majority of cases were either not (81%) or incompletely vaccinated (8%). Thirty clusters with a total of 119 cases and a median cluster size of three (range: 2–15 cases) were identified. Overall, 44 cases were imported or linked to imported cases. Of 73 contacts of cases who were quarantined, 50 developed measles and caused six secondary cases. This compares to 81 secondary cases among 173 non-quarantined cases (relative risk: 0.26; 95% confidence interval: 0.06–0.65), demonstrating the effectiveness of well targeted quarantine measures in reducing transmission.
Related Concept Videos
Investigation of Disease Outbreaks
Infectious Diseases and Their Occurrence
Vaccinations
Steps in Outbreak Investigation
Principles of Disease Surveillance
Infection
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...

