The State Department is warning of tainted alcohol in Mexico. Elizabeth Keatinge (@elizkeatinge) has more.

Four days before Abbey Conner was found floating face down in a pool at a Mexican resort, Mary Jo Kuhn waded over to a swim-up bar in the same complex.

On her second drink, she blacked out.

Four days after Conner was pulled from the water, Meghan Gordon and her boyfriend were sitting on stools at the same swim-up bar where Conner and her brother had been drinking tequila on a family vacation.

Throughout the afternoon, a friendly bartender served Gordon and her boyfriend a couple of mixed drinks, then two rounds of tequila shots.

Neither can remember what happened next — vomiting and being escorted away by hotel security.

The two incidents are among more than three dozen that have surfaced in the wake of a Milwaukee Journal Sentinel investigation this month into the death of 20-year-old Abbey Conner at the Iberostar Paraiso del Mar in Playa del Carmen in January.

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Travelers from around the country have called and emailed the Journal Sentinel, describing similar incidents at numerous resorts in Mexico and providing documentation for their stories.

They describe how they got sick and blacked out — many times after just two drinks — while vacationing at the…