immunisation research group at the doherty institute and joins us live now from melbourne. thank you forjoining us. give us a sense, first of all, of the general picture when it comes to vaccine inequality. first of all, it is unequal in terms of distribution around the world, but it is also unequal in terms of the pace at which vaccines are being rolled out even in rich countries such as australia. but right now, many of the rich countries have achieved high levels of two dose coverage, so their populations are approaching good levels of protection. the majority of countries in the world still don t have even modest amounts of vaccine to achieve anything approaching levels of coverage which are required. levels of coverage which are required- required. because of either money or required. because of either money or contracts, - required. because of either money or contracts, or- required. because of either. money or contracts, or often politics, lots of countries are not using the