The FTC order comes as the federal Centers for Disease Control and Prevention said Thursday that its latest update on vaping-related illness has exceeded 1,000 nationwide with at least 18 related deaths.

Most who got sick said they vaped products containing THC, the marijuana ingredient that causes a high, but some said they vaped only nicotine.

The Centers for Disease Control and Prevention said 1,080 confirmed and probable cases have been reported in 48 states and one U.S. territory as of Tuesday afternoon. The count includes 18 deaths in 15 states.

The CDC has said its investigation is focused primarily on open-pod e-cigarettes in which liquids containing the marijuana compound THC are being vaped. The CDC has not confirmed whether the problem stems from THC or from thickeners added to the vaping liquid.

There have been few incidents reported involving the closed-pod e-cigarettes sold by Juul, Vuse, blu eCigs and NJoy.

However, the CDC advises Americans to consider avoiding all vaping products, though the agency recently added the phrase “particularly those containing THC.”