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Moderna has requested FDA approval to extend its COVID-19 vaccine use to children aged 12-17, claiming 100% efficacy in trials. This would make it the second vaccine available for kids before the school year. Experts emphasize the importance of vaccinating children to boost immunity rates. Meanwhile, Johnson & Johnson's vaccine shelf life has been extended by six weeks, allowing storage for up to four and a half months, which helps prevent dose wastage as demand decreases. Kaiser Health News provides these updates.

How long can the Johnson and Johnson vaccine be stored without losing safety or efficacy?

Why is the extension of the shelf life of the Johnson and Johnson vaccine significant?