Iinfluenza and ARI intensity in Bulgaria  was low during week No 40 (28.09.2015-04.10.2015).   The total incidence  per 10,000 population was 38.77(during week No 39 the incidence was 29.11). From a total of 384 354 persons under surveillance, belonging to all age groups, a total of 1490 ARI cases have been reported (during week No 39 the cases were 1119). The incidence was highest in the age group 0-4 yrs (175.28 per 10,000 population), followed by age group of 5-14 yrs (108.21 per 10,000).