Key points as of April 18, 2013

• Influenza: In mainland France, the 2012–2013 influenza epidemic ended three weeks ago, and in Picardy, it ended a month ago. Influenza viruses are still circulating sporadically and may be responsible for isolated cases.

• Acute gastroenteritis: Nationally, the incidence of acute gastroenteritis has been above the epidemic threshold for three weeks; regionally, outpatient surveillance indicators (SOS Médecins) showed a slight increase, though they remained below the regional epidemic threshold.