Stupid question: could eradicating a disease like this one cause unpredicted side effects? Like driving some beetles to extinction causing other side effect? Or

Stupid question: could eradicating a disease like this one cause unpredicted side effects? Like driving some beetles to extinction causing other side effect? Or is it known that these diseases are purely nefast? ps: anyone is subscribed to Nautilus? Their free articles are great. I wonder if the magazine as a whole is worth it.