PM Scott Morrison says he won’t commit to a date when all Aussies who want to be immunised will have had at least their first shot. In a Sunday arvo Facebook post, Morrison said “While we would like to see these doses completed before the end of the year, it is not possible to set such targets given the many uncertainties involved.” Those uncertainties increased last week after advice from the government’s vaccines experts that the Pfizer shot was preferable for the under 50yos over the one produced by AstraZeneca over rare blood clot concerns. On Friday, the Morrison Government announced it had secured an extra 20 million doses of the Pfizer vaccine. Yesterday, it was confirmed those shipments would be delivered in the final quarter of this year. Labor’s Health spokesman Mark Butler yesterday said Team Morrison should have secured vaccines from more producers to avoid the current problems.