Mortality: Following the rise in mortality observed in Aquitaine and other regions since the beginning of the year, the decline in mortality observed since S09 has continued across all age groups, including among the elderly. Since the beginning of the year, winter mortality in the region has been 21% higher than the expected mortality calculated based on the previous eight years. The contribution of influenza to excess mortality is known to be significant among the elderly, although it is not possible to specify its exact share in the excess observed this season. These assessments should be interpreted with caution, as the data are not yet consolidated due to delays in data transmission.

Emergency department visits by vulnerable populations: According to available data, emergency department activity for those aged 75 and older and for children under 1 year of age is close to expected levels for this time of year.

Reportable Diseases (MDO)No unusual situation this week.

Acute Gastroenteritis (AG)According to SOS Médecins, activity has increased in Aquitaine and remains stable nationwide. Emergency department activity is stable but remains high across all regions.

Influenza and influenza-like illnessesIn Aquitaine, activity continues to decline but remains close to thresholds, with 5.3% of influenza-related activity reported by SOS Médecins (compared to 9.3% in Week 10) and 0.3% by Oscour® (compared to 0.4% in Week 10), as of March 19, 2015, 97 severe cases of influenza in intensive care compared to 91 on March 11, 2015. No new outbreaks of acute respiratory infections in nursing homes.

Bronchiolitis: Low activity, with 2% of SOS Médecins cases and 5.4% of emergency department visits among children under 2 years of age, and 58 cases managed by the AquiRespi network.

Respiratory virology and enterovirus meningitis: A marked decrease in the circulation of influenza viruses according to the Bordeaux University Hospital, particularly influenza A (19%) and influenza B (10%), and an increase in rhinoviruses (35%).

Carbon monoxide poisoning (update as of 03/11/15) Since Sept. 2014, 48 (+5) episodes of CO poisoning affecting 153 people in Aquitaine (2 deaths). Nationally, 36 deaths have been recorded since Sept. 2014.