With the discovery of new and highly transmissible coronavirus variants within the United States, Oregon public health experts are recommending that individuals upgrade or reinforce the cloth masks that have become popular.
Double masking has not yet become a requirement by federal and local health authorities but it is highly recommended as the new COVID-19 variants travel throughout the state and country.
You can double your cloth mask with a surgical mask or acquire a 2.5 micron filter to use along with your cloth mask. Importantly, these are recommendations, not requirements, as they are difficult to enforce. It is often not obvious if a person is wearing two masks, or one mask with a filter by just looking at them.