During the week No 12 (21.03.2022 до 27.03.2022)  the intensity of ARI and influenzа in Bulgaria is decreasing by comparison with  the previous week (14.03.2022 - 20.03.2022) . The total incidence per 10,000 population was  110,48 (during week No 11 the incidence was 126,67). From a total of  379 716 persons under surveillance, belonging to all age groups, a total of 4195 ARI cases have been reported (during week No 11 the cases were 4810). The incidence was highest in the age group 0-4 yrs (351.32 per 10,000 population), followed by age group of 5-14 yrs (396,71 per 10,000 population). The NRL "Flu and ARI"/NCIPD   reported 38 positive samples for influenza А/H3N2  within week No 12 .