I've noticed the same. In the fall after school starts they spray heavily and everyone gets the same kind of ailment. They say it's going around. I say bullsh_t. They just sprayed everyone with the same pathogen. Then when they want everyone to get a flu shot they spray again sending everyone to the Dr.'s office. I've had a cough 4 years now I can't get rid of. Everytime they spray it gets worse. Nothing helps, heavy antibiotics, colloidal silver, essential oils. I've tried everything.