Iinfluenza and ARI intensity in Bulgaria was low during week No 26 (25.06.2012 -01.07.2012) and the total incidence per 10,000 population was 23.43 (during week No 25  the incidence was 23.70 ). From a total of 380,239 persons under surveillance, belonging to all age groups, a total of 891 ARI cases have been reported (during week No 25  the cases were 921). The incidence was highest in the age group 0-4 yrs (131.70 per 10,000 population), followed by age group of 5-14 yrs (69.96 per 10,000).