New Study Suggests Natural Immunity Is More Protective over Time Than COVID-19 Vaccine December 13, 2021December 12, 2021 Minnesota Sun Staff <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> – – – Photo “Woman in COVID Mask” by Surprising_Shots.
