Cambridge-based Moderna Tuesday said its potential flu vaccine needs more study in a late-stage clinical trial.

The company said an independent data and safety monitory board found that the potential vaccine “did not meet the statistical threshold necessary to declare early success” in the study.

The board recommended that the trial should continue.

Moderna is developing the vaccine, labeled mRNA-1010, to guard against seasonal flu. It is testing the vaccine in two, late-stage studies in the Southern and Northern hemispheres. Moderna shares shed $4.90, closing at $155.25.

A Boston-area supermarket chain will pay $800,000 to settle allegations that it violated state labor laws by failing to pay workers overtime and weekend rates, the state attorney general’s office said Tuesday.

The C-Mart stores, which specialize in Asian foods and are located in Boston’s South End and Chinatown neighborhoods as well as in Quincy, were issued 15 citations in 2021 following an investigation by the attorney general’s Fair Labor Division.

In addition to not properly paying workers for overtime or for hours worked on Sundays, authorities concluded that the stores failed to furnish accurate payroll records and failed to post required workplace notices.

A lawyer for C-Mart said the company cooperated with the investigation and that while it did not agree with the attorney general’s methodology for calculating the amount due, it was pleased to reach a resolution without litigation.

“This matter arose due to bookkeeping system issues and the unavailability of timecards, not to bad faith of anyone at C-Mart,” attorney Matthew Morris said.