The flu epidemic is approaching because the intensity of flu activity continues to increase and its incidence is already 47.6 cases per 100,000 inhabitants, according to the latest report of the surveillance system, prepared by the Carlos III Health Institute.
Influenza activity is close to the epidemic threshold and the virus that circulates mostly is A, specifically 51% of type A (H3N2) and 49% of A (H1N1) pdm09.
The report for the week of December 31 to January 6 indicates that influenza activity is still in the pre-epidemic period, although the circulation of influenza viruses continues to increase.
The incidence rates exceed this week the basal threshold, ie the average level set for this season (55.5 cases per 100,000 inhabitants), in the Balearic Islands, while in Cantabria, Navarra, the Basque Country and Melilla and exceeded in previous weeks .
Of the severe hospitalized confirmed cases of influenza, 96% are influenza A viruses and 4% B. 51% of these severe cases have been registered in the group of over 64 years, followed by 45 to 64 years (27%)
Since the beginning of the season, lethality among serious hospitalized cases is 10.5%.