It looks like scam. I received several call and message. They said they were looking for Helen and they were from NSW health. However, I am not Helen. In their message, there is a website link. I think that is fishing link. Don't trust this number. Reading the similar comment of an anonymous person in this group, I firmly believe this is scam

Supposedly NSW Health. Have received this same message a number of times despite having informed person who called that there was no-one by the name of "Chris" at
my number and I did not know anyone by that name.