Iinfluenza and ARI intensity in Bulgaria was low during week No 30 (22.07.2013 - 28.07.2013) and the total incidence per 10,000 population was 21.99(during week No 29 the incidence was 26.86). From a total of 381 562 persons under surveillance, belonging to all age groups, a total of  839 ARI cases have been reported (during week No 29 the cases were 1 025). The incidence was highest in the age group 0-4 yrs (116.03 per 10,000 population), followed by age group of 5-14 yrs (54.61 per 10,000).