The unseasonably warm winter and the summer-like days that graced us throughout early spring were welcomed by more than warm-blooded humans—insects. Indiana’s winter was not cold enough to kill off the hibernating insects and their eggs. Now they are out in full force this spring, and much sooner than normal.
Mosquito-borne diseases, such as West Nile virus (WNv) and eastern equine encephalomyelitis, are likely to emerge earlier this year. WNv has already been documented in a Pennsylvania horse—extremely ahead of normal for the season. Thus far, Indiana has not had any positive reports of WNv. This year, early vaccinations would be a wise choice.