Well before the rest of the world was talking about blood plasma and its use in fighting coronavirus, Dr. Shmuel Shoham knew all about it — and where he could probably get a lot of it.
By early March, Shoham, an expert on infectious diseases in transplant patients at Johns Hopkins University, had already realized that convalescent plasma — antibodies spun out of the blood of people who had Covid-19 — could be a key therapy in fighting the disease.
So he called a friend who is an Orthodox Jew — Chaim Lebovits, a shoe wholesaler from Monsey, N.Y. — to ask him if he could encourage others in his community to donate their plasma. Orthodox Jews, Shoham reasoned, hit early and hard by the virus, probably had an abundance of people with just the right antibodies — people who got sick and recovered, or people who had the virus and never even knew it.
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