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Giving a COVID-19 vaccine at the same time as a seasonal flu vaccine appears safe and effective, according to a new study.

Overall, the Novavax vaccine (Novavax) has shown 89.8 percent efficacy in an ongoing, placebo-controlled phase III study, the first to test how people react to getting both shots simultaneously. When the researchers gave a smaller group of 431 volunteers from the same study an influenza shot at the same time, efficacy dropped slightly to 87.5 percent.

"These results demonstrate the promising opportunity for concomitant vaccination, which may lead to higher vaccination rates and further protection against both viruses," says study co-author Raja Rajaram, MD, a medical affairs lead at Seqirus, the company that supplied the flu vaccines for the research.

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