Iinfluenza and ARI intensity in Bulgaria  was increased during week No 49 (30.11.2015-06.12.2015).   The total incidence  per 10,000 population was 106.28(during week No 48 the incidence was 96.61). From a total of 384 309 persons under surveillance, belonging to all age groups, a total of 4080 ARI cases have been reported (during week No 48 the cases were 3709). The incidence was highest in the age group 0-4 yrs (481.64 per 10,000 population), followed by age group of 5-14 yrs (273.75 per 10,000).