JOHANNESBURG - The idea of a vaccine passport is not new.
Professor Tulio de Oliveira says it's has been around for the past 30 to 40 years.
Government is thinking of introducing a vaccine passport to show who's received the jab.
"I don't know why [this has been] so controversial, one thing I know, as a scientist, this virus is really persistent," De Oliveira said.
"It's not going away, we are having wave after wave, we have variant after variant, and one thing we know as scientists, working closely with national and international organs is that the effect of the virus (which is highly transmissible and difficult to rid of) is catastrophic."
De Oliveira said vaccination will be the quickest way to get back to some level of normalcy.