A chewing gum laced with a plant-grown protein serves as a "trap" for the SARS-CoV-2 virus, reducing viral load in saliva and potentially tamping down transmission, finds a new study.

The researchers exposed saliva samples from Covid-19 patients to the ACE2 gum and found that levels of viral RNA fell so dramatically to be almost undetectable, indicates the study published in the journal Molecular Therapy.