So far at least six people in two states have fallen ill; four of them were hospitalized.

Botox are behind a multistate outbreak of botulism-like illnesses, state health officials report.

So far, at least six people have fallen ill in two states: four in Tennessee and two in Illinois. Four of the six people required hospitalization for their condition (two in Tennessee and both cases in Illinois).

The Centers for Disease Control and Prevention is reportedly planning a nationwide alert to notify clinicians of the potentially counterfeit Botox and advise them to be on the lookout for botulism-like illnesses. The agency did not immediately respond to Ars’ request for information.