Twitter: a complementary tool to monitor seasonal influenza epidemic in France?

Social media as Twitter are used today by people to disseminate health information but also to share or exchange on their health. Based on this observation, recent studies showed that Twitter data can be used to monitor trends of infectious diseases such as influenza. These studies were mainly carried out in United States where Twitter is very popular1-4. In our knowledge, no research has been implemented in France to know whether Twitter data can be a complementary data source to monitor seasonal influenza epidemic.

June 18, 2019

Flexibility of ED surveillance system to monitor dengue outbreak in Reunion Island

In Reunion Island, a French overseas territory located in the southwestern of Indian Ocean, the dengue virus circulation is sporadic. Since 2004, between 10 and 221 probable and confirmed autochthonous dengue fever cases have been reported annually. Since January 2018, the island has experienced a large epidemic of DENV serotype 2. As of 4 September 2018, 6,538 confirmed and probable autochthonous cases have been notified1.

June 18, 2019

Outbreak of ED visits related to the use of synthetic cannabinoids, Mayotte Island

On October 2016, the Indian Ocean Regional Health Agency was alerted about an increase in ED visits related to adverse reactions associated with use of SC on Mayotte Island. In this context, an investigation based on a syndromic surveillance system was implemented by the regional unit of the French national public health agency.


To confirm and to characterize the increase in emergency department (ED) visits related to the use of synthetic cannabinoids (SC).

January 21, 2018

Enhanced syndromic surveillance during the 9th Indian Ocean Island Games, 2015

The 9th IOIG took place in Reunion Island from July 31 to August 9, 2015. This sport event gathered approximatively 1 640 athletes, 2 000 volunteers and several thousand spectators from seven islands:Comoros, Madagascar, Maldives, Mauritius, Mayotte, Seychelles and Reunion.In response to the import risk of infectious diseases from these countries where some of them are endemics, the syndromic surveillance system, which captures 100% of all Emergency Department visits, was enhanced in order to detect any health event.


July 27, 2017

Wikipedia: a tool to monitor seasonal diseases trends?

Today, Internet, especially Wikipedia, is an important part of everyday life. People can notably use this popular free online encyclopedia to search health-related information. Recent studies showed that Wikipedia data can be used to monitor and to forecast influenza-like illnesses in near real time in the United States [1,2].
 We carried out a study to explore whether French Wikipedia data allow to monitor the trends of five seasonal diseases in metropolitan France: influenza-like illness, gastroenteritis, bronchiolitis, chickenpox and asthma.


August 26, 2017

“Koman i lé” : An Online Self-Reported Symptoms Surveillance System in Reunion Island

During the past ten years, the syndromic surveillance has mainly developed thanks to clinical data sources (i.e. emergency department, emergency medical call system, etc.). However, in these systems, the population doesn’t play an active role. It is now important that the population becomes an actor of this surveillance; especially since several European experiences about influenza showed that the population could participate to an internet-based monitoring. In Reunion Island, the population is very sensitive to public health concerns.

September 28, 2017

Interest of Prospective Spatio-Temporal Analysis from ED Data to Detect Unusual Health Events

Many syndromic surveillance systems use spatio-temporal analysis to detect local outbreaks such as gastrointestinal illnesses and lower respiratory infections. In Reunion Island, the syndromic surveillance system is based mainly on ED visits. Spatial analysis was first used in 2013 to validate retrospectively a cluster of viral meningitis. At the end of 2014, the Regional Office of French Institute for Public Health Surveillance implemented a prospective computer-automated space-time analysis in order to launch daily analyses of ED visits.


October 10, 2017

Using an Emergency Department Syndromic Surveillance System to Assess the Impact of Cyclone Bejisa, Reunion Island

On January 2, 2014 the cyclone Bejisa struck Reunion Island. This storm of Category 3 (Saffir–Simpson scale) disturbed electricity supply and drinking water systems. Floods, roof destructions and the threat of landslide led to the evacuation of residents to emergency shleters. In this context, the regional office of French Institute for Public Health Surveillance in Indian Ocean set up an epidemiological surveillance in order to assess the impact in the aftermath of the cyclone.


November 08, 2017

Usefulness of Syndromic Surveillance during Ultra-endurance Running Races: Example with the ÒGrand Raid de La RŽunionÓ Ultra Trail

The 'Grand Raid de la Reunion' is one of the hardest ultra trails in the world (5,350 competitors in 2012). This one stage race takes place in Reunion Island, a French overseas department in the Indian Ocean. Ultra trails and ultra marathons are intense long-distance running races pushing back human physical abilities' limits. In general terms, studies about these races highlight different severity levels' injuries, from asymptomatic to critical condition [1-4]. No study has yet used syndromic surveillance to study the impact of such sporting events on ED visits.

May 02, 2019

Using a Syndromic Approach to Study Health Impact and Risk Factors of Alcohol Intoxication in Reunion Island

In Reunion Island, alcohol is the most experienced psychoactive substance [1]. Alcohol consumption is characterized by a massive ingestion of hard liquor and an early experimentation. Health consequences are significant: a high annual incidence of fetal alcohol syndromes [2] and a higher premature mortality than in France mainland [1]. Reunion island is one the French regions most affected by addictive behaviors related to alcohol. However, existing data are insufficient concerning the current health impact and associated factors.


May 02, 2019


Contact Us

NSSP Community of Practice



This website is supported by Cooperative Agreement # 6NU38OT000297-02-01 Strengthening Public Health Systems and Services through National Partnerships to Improve and Protect the Nation's Health between the Centers for Disease Control and Prevention (CDC) and the Council of State and Territorial Epidemiologists. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of CDC. CDC is not responsible for Section 508 compliance (accessibility) on private websites.

Site created by Fusani Applications