“Scientists have devised a way to use the antibody-rich blood plasma of COVID-19 survivors for an upper-arm injection that they say could inoculate people against the virus for months. Using technology that’s been proven effective in preventing other diseases such as hepatitis A, the injections would be administered to high-risk healthcare workers, nursing home patients, or even at public drive-through sites — potentially protecting millions of lives, the doctors and other experts say.” LA Times: A plasma shot could prevent coronavirus. But feds and makers won’t act, scientists say.