An Atlanta-based biotech company last week said it successfully concluded the first-ever clinical trial testing — with help from the Bill & Melinda Gates Foundation — of a microarray injection-free vaccine on children as young as 9 months old.

Microarray injections are administered via a microneedle patch that looks like a Band-Aid and is applied by pressing it to the skin. Once applied, microneedles penetrate the upper layer of the skin to deliver the vaccine.

Proponents of this vaccination method, such as Gavi, the Vaccine Alliance — of which the Gates Foundation is a founding member — call the patches “the future of vaccination, where these lifesaving interventions are delivered painlessly, without the need for syringes or perhaps even trained medical professionals.”

The microneedle vaccine market for the flu vaccine alone is projected to reach $2.3 billion by 2030.

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