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Sources for COVID infection causing immunity for around 8 months

Aug 21st, 2021
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  1. Sources for COVID infection causing immunity for around 8 months
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  3. https://apps.who.int/iris/bitstream/handle/10665/341241/WHO-2019-nCoV-Sci-Brief-Natural-immunity-2021.1-eng.pdf
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  5. https://www.eurekalert.org/news-releases/761014
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  7. https://www.washingtonpost.com/health/post-infection-coronavirus-immunity-usually-robust-after-8-months-study-shows/2021/01/07/d7d369a6-511a-11eb-b96e-0e54447b23a1_story.html
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