Most callers to my radio program are worried about AstraZeneca, but their fears are misplaced We’re sorry, this service is currently unavailable. Please try again later. Dismiss By Ross Walker Normal text size Advertisement Every week I host a two-hour radio program about health issues on national commerical radio. The most common talkback calls I am receiving at the moment and the most common email inquiries are all around the clotting risk of the AstraZeneca vaccine. The level of paranoia is alarming. Some callers have had blood clots and think this puts them at extra risk of experiencing the extemely rare cases of clotting associated with the AstraZeneca COVID-19 vaccine. Others are on blood thiners and so think AstraZeneca is not for them. Many over-50s think the government’s advice in April restricting Moderna and Pfizer to younger Australians means they are missing out on the “gold standard”. All of this is contributing to an unwillingness to get vaccinated with AstraZeneca. And all of it is wrong.