She characterised bacterial toxins from B. paratyphosus, Streptococcus scarlatina & Salmonella ssp. then successfully used in an #immunisation program against scarlet fever in Pittsburgh during the 30’s & 40’s. Promoted to assistant prof 1923 & assoc prof 1925, full prof in 1949 at 70, 1 year prior to retirement. Joined the BC Medical Research Institute & worked 3 more years. 🧵5/5
