With more Covid-19 booster shots on the horizon, one expert says mixing and matching doses may be an effective approach
By Aya Elamroussi, CNN Amid the growing prospect of more Covid-19 booster shots becoming available, an expert has suggested that some people could receive a dose of a different vaccine from the one they initially received. “I hope that when the FDA and CDC review data around Moderna and Johnson & Johnson that they will
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