State health workers are still trying to find out what's led to a stomach flu outbreak that forced three oyster harvest areas to close.
In the past two weeks, areas in St. Bernard, Plaquemines and parts of Lafourche and Jefferson parishes have closed to oyster fishing as a precaution.
38 cases of Norovirus in New Orleans and Mississippi were tied to those oysters.
The Louisiana Department of Health and Hospitals confirmed that everyone who was sick had eaten oysters.
The agency says it's unclear whether the problem was due to contamination in the water or if someone handling the oysters passed on the virus.