During the week No 37 (12.09.2022 - 18.09.2022)  the intensity of ARI and influenzа in Bulgaria shows slight increase  in comparison  to the previous week (05.09.2022 - 11.09.2022   ). The total incidence per 10,000 population was   34,41 (during week No 36 the incidence was  26,88). From a total of  379 817 persons under surveillance, belonging to all age groups, a total of  1307 ARI cases have been reported (during week No 36 the cases were 1021 ). The incidence was highest in the age group 0-4 yrs (186,05 per 10,000 population), followed by age group of 5-14 yrs (79,34 per 10,000 population). No influenza viruses detected.