Moderna plans to test a booster shot of its COVID-19 vaccine mRNA-1273 a year after the initial two-dose immunization as the duration of protection from the brand new vaccines is still unclear, reported CNBC.
Chief medical officer Tal Zaks said "from what we've seen so far, I think our expectation is that the vaccination should last you at least a year."
"To the degree that you need a booster shot, we'll make a data-based recommendation, and that will require us getting the data," he added.
According to a corporate presentation this week, the company plans to start the trial in July. Its clinical trial sites have already started to contact participants in its earlier studies, the news source said.
The first participants in Moderna's clinical trials got their shots in mid-March, while a second was given four weeks later.
Since the earlier trials tested multiple doses of the vaccine, those who had been given doses lower than the 100-mcg that was ultimately authorized would get boosters earlier, while those on 100 mcg or higher would get their booster at the year mark.
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