Iinfluenza and ARI intensity in Bulgaria was low during week No 24 (10.06.2013 -16.06.2013) and the total incidence per 10,000 population was 34.57 (during week No 23 the incidence was 34.86 ). From a total of 381 562 persons under surveillance, belonging to all age groups, a total of  1 319 ARI cases have been reported (during week No 23 the cases were 1 330 ). The incidence was highest in the age group 0-4 yrs (171.07 per 10,000 population), followed by age group of 5-14 yrs (92.81 per 10,000).