Canadian public health organizations have run into a serious communication problem about the AstraZeneca vaccine. Crisis management and communication theories explain what's gone wrong.
If one adenoviral vaccine is linked with blood clots, it doesn’t mean all vaccines in this family will have that same effect. But it's definitely worth health authorities assessing the data.
AstraZeneca just announced results from its US-based trial. It found the vaccine to be 79% effective and safe for use, despite recent concerns around reports of blood clots.
The Johnson & Johnson vaccine is different from the Moderna and Pfizer vaccines in a few important ways that could make it a huge help to global vaccination efforts.