“…We found 18 reports of 29 or more events where animal illnesses and deaths served as potential sentinel events for human health risks related to harmful cyanobacteria [ 36 , 40 , 42 , 50 , 74 , 77 , 85 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 ]. Among 15 of 18 reports describing 25 or more events, cyanobacteria-associated animal illness clearly preceded any reports of human illness [ 36 , 42 , 50 , 77 , 85 , 92 , 93 , 94 , 95 , 96 , 97 , 99 , 100 , 101 , 102 ]. Among 11 of 18 reports describing 15 or more events, cyanobacteria-associated animal illness or death was recognized, authorities were alerted to the presence of contaminated water, and action was taken to warn people of the risk associated with exposure to potentially toxic water [ 42 , 77 , 85 , 92 , 93 , 94 , 95 , 96 , 97 , 100 , 101 ].…”