Influenza and ARI intensity in Bulgaria was low during week No 27 (02.07.2018-08.07.2018). The total incidence per 10,000 population was 28.36 (during week No 26 the incidence was 32.29). From a total of 381 493 persons under surveillance, belonging to all age groups, a total of 1 082 ARI cases have been reported (during week No 26 the cases were 1 232). The incidence was highest in the age group 0-4 yrs (174.73 per 10,000 population), followed by age group of 5-14 yrs (60.31 per 10,000).