Iinfluenza and ARI intensity in Bulgaria  was increased during week No 45 (02.11.2015-08.11.2015).   The total incidence  per 10,000 population was 95.59(during week No 44 the incidence was 61.67). From a total of 384 309 persons under surveillance, belonging to all age groups, a total of 3670 ARI cases have been reported (during week No 44 the cases were 2370). The incidence was highest in the age group 0-4 yrs (424.21 per 10,000 population), followed by age group of 5-14 yrs (252.93 per 10,000).