New York City’s two government-funded shooting galleries purport to prevent fatal overdoses — but at least 46 junkies had to be rushed by ambulance to the nearest hospital in cardiac arrest or with life-threatening strokes or seizures, records show.

OnPoint, the nonprofit that operates the two so-called safe injection sites in Harlem and Washington Heights, doesn’t even keep track of what happened to these people – or if they died, The Post has learned, an oversight critics are slamming as negligent.

The city Health Department, which oversees the two safe injection sites, refused to answer whether it keeps track of the outcome of the 46 people rushed to hospital either.

Overdoses at the centers, meanwhile, went up 7%, from 636 to 683, between their first and second years, according to

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