JPSIM Journal of Pakistan Society of Internal Medicine J Pak Soc Intern Med 2709-8729 2710-0804 Pakistan Society of Internal Medicine 10.70302/jpsim.v3i1.2218 jpsim.v3i1.2218 Medical News New Study Shows Natural Immunity to COVID Has Enduring Strength 15 03 2022 2022 3 1 84 89 15 12 2021 12 01 2022 Copyright © 2022 The Author(s) 2022 The Author(s) https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.