- British study shows evidence of waning immunity to Covid-19 CNN
- Study Shows Covid-19 Antibodies Waning Over Time, Suggesting Immunity May Wear Off msnNOW
- Covid: Antibodies ‘fall rapidly after infection’ BBC News
- COVID-19 Can Make Patients’ Immune Systems Attack Their Own Bodies, Study Shows ScienceAlert
- Asymptomatic virus sufferers lose antibodies sooner: Study – The Jakarta Post Jakarta Post
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