Combing Nasal and Injected Covid Vaccines Offers Extra Immunity Boost, New Study Says

The new vaccine strategy can establish good immunological memory, so people do not need to be vaccinated frequently, one of the researchers said. Photo: VCG

A new Chinese study shows that combining an intramuscular jab with a nasal vaccine can be an effective strategy to boost the immune response against Covid-19, which could help reduce infections.

The researchers investigated the efficacy of the combined use of a DNA vaccine and the nasal spray and found “substantially higher systemic and mucosal immune responses” in mice, according to the paper published in the journal of EBioMedicine by The Lancet.

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