LAKE ANNA, Va. (CBS19 NEWS) -- The Virginia Department of Health has declared the Shiga toxin-producing E. coli outbreak in Lake Anna over.

It has been more than 20 days since the last person who visited Lake Anna over the Memorial Day holiday became ill. Additional testing and surveillance will continue.

Unrelated to the outbreak, there is still a swim advisory issued for the Upper North Anna Branch due to harmful algal blooms. This is the area of the lake from the headwaters of the North Anna River to the Route 522 bridge.