Mortality: Following the rise in mortality observed in Aquitaine and other regions since the start of the year, the number of deaths across all age groups and among the elderly declined slightly in week 09. However, mortality remains high, with winter mortality nationwide 18% higher than the expected mortality rate calculated based on the previous eight years. In Aquitaine, this excess is estimated at approximately 20% (compared to 7% in 2013/14 or 15% in 2008/2009). The contribution of influenza to excess mortality is known to be significant among older adults, though it is not possible to specify its exact share in the excess observed this season. These initial assessments should be interpreted with caution, as the current episode is not yet over and the data are not yet consolidated due to the usual delays in data transmission.

Emergency department visits by vulnerable populations: According to available data, emergency department activity for those aged 75 and older remains close to the alert threshold. Emergency department activity for children under 1 year of age is in line with expected values for this period.

Reportable Diseases (MDO)No unusual situation this week.

Acute Gastroenteritis (AG)According to SOS Médecins, activity has increased in Aquitaine and remains stable nationwide. There has been a decrease in emergency department visits for AG across all regions.

Influenza and influenza-like illnessesIn Aquitaine, activity continues to decline but remains above thresholds, with 9.3% of influenza-related activity reported by SOS Médecins (compared to 15.6% in Week 9) and 0.4% by Oscour® (compared to 1.3% in Week 9), as of March 11, 2015, 91 severe cases of influenza in intensive care compared to 73 on February 25, 2015, as well as 4 new outbreaks of acute respiratory infections in nursing homes.

Bronchiolitis: Low activity below thresholds. Declining activity in the AquiRespi network with 49 cases treated.

Respiratory virology and enterovirus meningitisSignificant circulation of seasonal respiratory viruses according to Bordeaux University Hospital, notably influenza A (28%), influenza B (19%), coronavirus (19%), and RSV (15%).

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 recorded since Sept. 2014.