This was highlighted on Jeremy Vine (Radio 2) this morning. Horrible. A care home owner contributed to the discussion and made comments about how until care isn't recognised as the actual profession it really is and not a "job for anyone" this is always a risk. 100% agree.
Think it needs to go the way of nurseries and regulations in place to mean only qualified staff, means wages need to go up though. Only employing qualified staff won't fully erase the risk but would definitely help.