Last week, I announced the introduction of mandatory record-keeping for busy places and large gatherings. These are the sorts of places where people gather consistently and in larger numbers, such as cafes, restaurants, bars, casinos, concerts, aged-care facilities, healthcare facilities, barbers, nightclubs, and libraries. It's now mandatory to wear a mask when visiting a business or a service at alert level 4. We've also, based on the latest scientific evidence, widened the gap between vaccines doses from three weeks to six weeks, to get wider population coverage sooner. Of course, we'll continue to follow the science—for example, what it tells us about the most effective timing for booster shots and ongoing vaccinations.