Two months after a norovirus outbreak at Bali Hai restaurant, county health officials have fingered ice as the foodborne source that sickened at least 61 people — including three in a wedding party.

“We’re certain it had something to do with the ice” served at the annual awards banquet of the local Society of Professional Journalists, said county spokesman Michael Workman. “We’re not certain how it got in the ice.”

In its final report to the San Diego SPJ, the county said 84 of the 172 people at the July 29 banquet returned surveys on what they ate and other issues. Fifty were sickened by norovirus type GI.1. (Eight others also reported getting ill.)

Three diners elsewhere in Bali Hai also got GI.1 — part of a wedding party of 140.

“We have to [classify it as] food poisoning,” Workman said, rather than a sick person spreading the gastrointestinal disease.

A Sept. 4 report said, “We did not link any food service workers with the illness,” but Workman on Tuesday told Times of San Diego that “we can’t say yes or no” to whether an employee caused the outbreak.

Workman stressed that Bali Hai remains “rated for high” for hygiene. “Everyone involved — from the people who attended [the banquet] and from the restaurant … did the right thing.”

County spokesman Workman saluted Bali Hai management.

“The restaurant had a great hygiene procedure, really good,” he said. “They are on the up-and-up on what they do and what they teach their employees. The employees have been there a long time. So they get it.”

But Workman acknowleged the county’s findings can be “squishy” and “it’s not an exact science.”

But: “We’re confident it’s been taken care of.”