Vaccines and Covid variants: how effective are the jabs and what will it mean for travel?
Experts say Australia should be able to reopen border as long as vaccines prove effective against severe disease – because that’s what kills people
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The results from AstraZeneca’s US phase 3 clinical trials for its Covid vaccine were made available this week with the vaccine showing 100% efficacy against severe or critical disease and hospitalisation. It showed 80% efficacy in those aged 65 years and over and, overall, had 79% efficacy at preventing symptomatic Covid-19.
These interim safety and efficacy results were based on 32,449 participants who had between them 141 symptomatic cases of Covid-19, and although questions about some aspects of the study are now being raised in the US, the good results largely mirror those of previous clinical trials.
Read the original article at The Guardian