As climate patterns change and tick populations expand into new regions, Canada is witnessing a steady rise in illnesses transmitted by these tiny but dangerous parasites. Lyme disease has long dominated public attention, but health experts are increasingly warning about another infection spreading through the country: anaplasmosis.
Caused by the bacterium Anaplasma phagocytophilum , the disease is transmitted mainly through the bite of infected blacklegged ticks ( Ixodes scapularis ). While many cases are mild and resolve with timely treatment, anaplasmosis can occasionally lead to serious complications involving the lungs, nervous system, kidneys and heart.