Iinfluenza and ARI intensity in Bulgaria was low during week No 41 (08.10.2012 -14.10.2012) and the total incidence per 10,000 population was 55.57(during week No 40  the incidence was 44.68). From a total of 380,239 persons under surveillance, belonging to all age groups, a total of 2 113 ARI cases have been reported (during week No 40 the cases were 1 699). The incidence was highest in the age group 0-4 yrs (298.95 per 10,000 population), followed by age group of 5-14 yrs (137.46 per 10,000). The highest incidence has been reported in: Lovech (150.90),