Iinfluenza and ARI intensity in Bulgaria was low during week No 27 (01.07.2013 - 07.07.2013) and the total incidence per 10,000 population was 25.16(during week No 26 the incidence was 29.04 ). From a total of 381 562 persons under surveillance, belonging to all age groups, a total of  960 ARI cases have been reported (during week No 26 the cases were 1 108). The incidence was highest in the age group 0-4 yrs (140.86 per 10,000 population), followed by age group of 5-14 yrs (61.56 per 10,000).