The mass K2 overdose in Bed-Stuy, Brooklyn, that left more than 33 hospitalized is apparently a dramatic example of a recent alarming trend. According to the New York Times, synthetic marijuana has sent more than 130 to the hospital between Monday and Wednesday alone this week, with about a fourth of those from the Brooklyn incident. The number of people admitted to emergency rooms in just three days almost matches the entire number — 140 — hospitalized in June. Cops think a “bad batch” has hit the streets, sickening people, though they’re not yet sure of the origin. And even with reports of a K2 “epidemic” in Bed-Stuy, hospitalizations linked to synthetic weed have plunged over the past year: Last July, at the peak of the city’s K2 problem, 1,200 people were hospitalized because of bad reactions to spice — a number that decreased by 85 percent in March 2016.