Blastomycosis, 2017: DCN - Minnesota Dept. of Health

Blastomycosis, 2017

In 2017, 44 blastomycosis cases were reported, an increase over the 39 cases in 2016 and 34 cases in 2015. The median age was 40.5 years (range, 6 to 76); 32 (73%) were male. Thirty-two (78%) cases were white, 4 (10%) were American Indian/Alaska Native, 2 (5%) were Asian/Pacific Islander, 1 (2%) was mixed race, and 3 were unknown race. Thirty-two (73%) cases were hospitalized for a median of 9 days (range, 1 to 37). Seven (16%) cases died, which is a higher fatality rate than the normally observed 9-10%. Blastomycosis was the cause of death in 6 of the 7. Seventeen cases (40%) had immunocompromising health conditions or medications, including 9 (20%) with diabetes, 4 (10%) taking corticosteroids, and 2 (5%) on chemotherapy for cancer. Thirty-four (77%) cases had pulmonary infection, 2 (5%) had extra-pulmonary infection, and 8 (18%) had disseminated infection.

From 1999 to 2017, 613 blastomycosis cases were reported; the median annual number is 33 (range, 22 to 46). Exposure information is available for 514 cases. The largest number, 129 (25%), were likely exposed in St. Louis County. Sixty-three (12%) cases were likely exposed in Itasca County, 35 (7%) in Cass County, 16 (3%) in Chisago County, 16 (3%) in Beltrami County, and 15 (3%) in Hennepin County. (Figure 2).

figure two shows map of minnesota with cases by county

Updated Thursday, 24-Jan-2019 08:37:59 CST