The threshold for the outbreak of gastroenteritis had not been reached nationally during the week from 26 November to 2 December. Data from the Sentinel network shows that if only two regions were above this heading, many are approaching and the number of cases has increased in many areas. Large regional disparities seem to decrease as the peak period approaches.
For the 48th week of the year, "The incidence rate of acute diarrhea cases observed in a general medical consultation was estimated in 157 cases per 100,000 population, below the epidemic threshold (169 cases per 100,000 population)", report the Sentinel network. The previous week reported 156 cases per 100,000 population with a threshold of 162 cases.
See: epidemic of gastroenteritis: five things to know about the disease
If the epidemic did not increase this week, it seems to be spreading. With an average number of cases similar to the previous week, only two regions, instead of four, are above the epidemic threshold. The Hauts-de-France with 232 cases per 100,000 inhabitants and the PACA region (220). Several regions, however, are approaching: the Ile-de-France (165), the Grand Est (164), the Pays de la Loire (152) and the Normandy (147).
The total number of cases can vary considerably from one year to the next. The French health authorities refer to the period 2009-2010, during which 21 million patients were identified. Every winter, the number of consultations varies between 700,000 and 3.7 million in France. "The increase in the number of consultations for acute viral gastroenteritis usually it is observed between December and January with a peak, more often during the first two weeks of January ", according to Public Health France.