Iinfluenza and ARI intensity in Bulgaria  was low during week No 37 (07.09.2015-13.09.2015).   The total incidence  per 10,000 population was 28.41(during week No 36 the incidence was 27.16). From a total of 384 354 persons under surveillance, belonging to all age groups, a total of 1092 ARI cases have been reported (during week No 36 the cases were 1044). The incidence was highest in the age group 0-4 yrs (139.30 per 10,000 population), followed by age group of 5-14 yrs (66.67 per 10,000).