U.S. health officials on Thursday reported bit.ly/371CYA2 3 more deaths from a mysterious respiratory illness tied to vaping, taking the total death toll to 60.

Axar.az reports citing Reuters that as of Jan. 14, the Centers for Disease Control and Prevention (CDC) reported 66 new cases from the illness associated with use of e-cigarettes or vaping products. The number of people hospitalized now stands at 2,668.

In November, U.S. officials reported the discovery of Vitamin E acetate — believed to be used as a cutting agent in illicit vaping products containing marijuana components — in all lung samples from 29 patients.

CDC in November called Vitamin E acetate as a “chemical of concern” and recommended that the substance not be added to e-cigarette, or vaping products, while the investigation is ongoing.