A trend of dropping anti-SARS-CoV-2 plaque reduction neutralization test titers over time in Canadian convalescent plasma donors.
Steven J DrewsDana V DevineJanet McManusEmelissa MendozaKathy ManguiatHeidi WoodRoxie GirardinAlan DupuisKathleen McDonoughMichael DrebotPublished in: Transfusion (2021)
Blood operators cannot infer that SARS-CoV-2 PRNT50 will remain high in repeat plasma donors 3-4 months after onset of COVID-19 symptoms.