Highlights

• Since Week 40, influenza and influenza-like illness activity has been consistent with what is typically observed at this time of year in the emergency departments of the OSCOUR® network in Lorraine and among the SOS Médecins association in Meurthe-et-Moselle.In week 47, 12 and 6 diagnoses were made by emergency department physicians and the association, respectively. Nationally, influenza activity remains low this week.

• No severe cases of influenza have been reported since the start of surveillance (week 45) by intensive care units in Lorraine.

• In week 47, activity in the emergency departments of the OSCOUR® network in Lorraine related to bronchiolitis was higher than in the previous two years. In Lorraine, as at the national level, the upward trend in this activity is accelerating and likely marks the start of the epidemic season. Doctors in the region’s emergency departments made 70 diagnoses of bronchiolitis in week 47, accounting for 10.2% of activity among children under two years of age. According to the SOS Médecins association in Meurthe-et-Moselle, this activity has remained within expected ranges since week 37.

• According to virological data from the Nancy University Hospital, the number of positive respiratory virus tests has been rising slightly since week 45. Two types of viruses are primarily detected: respiratory syncytial virus (RSV) and parainfluenza virus.

• In Lorraine, activity related to gastroenteritis in the emergency departments of the OSCOUR® network and within the SOS Médecins association of Meurthe-et-Moselle remains stable compared to previous years. With 87 diagnoses made in week 47, this activity accounted for 0.8% of all diagnoses in emergency departments. Doctors from the SOS Médecins association in Meurthe-et-Moselle made 73 diagnoses of gastroenteritis and diarrhea, accounting for 8.1% of all diagnoses.

• The number of positive samples for circulating enteric viruses is stable according to data from the Nancy University Hospital. Adenovirus and rotavirus are currently the two most frequently detected viruses.

• According to available data, no unusual increase in mortality has been observed in Lorraine over the past few weeks. Since the delay in reporting death data exceeds 7 days, data for week 46 are currently being consolidated.