Photo: A town-wide mask mandate takes effect in Belmont at midnight, Aug. 9.

Belmont will enact a town-wide indoor mask mandate starting at midnight, Monday, Aug. 9, after the Health Board voted unanimously to approve the requirement and the Select Board endorsed the decision 3-0 at an emergency meeting held on Friday morning, Aug. 6.

The mandate will impact all establishments that has public indoor spaces including stores, eateries and offices. (See the order below) The town-wide regulation comes days after the Select Board placed a mask mandate on town buildings.

Belmont’s order mirrors the order passed by the community of Provincetown after the Cape Cod community saw a significant surge in infected residents despite having a 95 percent vaccination rate.

The return of the covering ordinance comes as the Covid-19 Delta variant is sweeping across the country increasing the number of positive coronavirus cases. After nearly a month when the town saw a single positive infection, Belmont has seen a significant uptick of 18 new cases over the past two weeks, with several being “breakthrough”, in which a fully vaccinated person is infected. The CDC has designated Middlesex county as having substantial level of infection.

The town-wide mandate will end when the level of community transmission for Middlesex county as recorded by the CDC is designated as either low or moderate for two consecutive weeks. That information is released by the CDC on Sunday afternoon.