The report in the South Jersey Times said that 11 people were taken to Underwood-Memorial Hospital in Woodbury for "decontamination and treatment".
A further 17 people made their own way to the hospital complaining of respiratory problems, it said.
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Rain will spread southeastwards through N. Ireland, Wales and England overnight.
The woman used her daughter's own Facebook page to live-stream the attack after the teenager posted provocative pictures online.
A senior employee at the organisation reportedly derided the three-year-old royal for being 'royal, rich' and "advantaged'.