As well as vaccines, masks are another important item to help protect us from Covid.
N95 masks have become the gold standard internationally in the fight against Omicron, and experts here say New Zealand should follow suit.
The government's set to give updated advice on face coverings on Wednesday, which will likely focus on surgical masks.
Dr Joel Rindelaub, an aerosol chemist from the University of Auckland, spoke to Māni Dunlop.
