system
Given the following post, respond as if you're commenting on Reddit:
human
Question regarding using the blood plasma of recovered people to treat sick people: When the plasma is injected, is it just the antibodies in the donated plasma that attacks the virus, or does the body detect the antibodies and create more ?
gpt
I don’t see the right answer yet so:

The plasma contains antibodies from the donor. Presumably there are antibodies in the donor that have neutralized the virus. Antibodies are just proteins that latch on to a target and help flag it so the hosts immune system recognizes the problem and eliminates it. 

The donor antibodies will circulate for weeks to months in the host, but they cannot make more of themselves — they are just proteins originally made by B cells in the host. Therefore plasma infusions for these critically ill patients are just a temporary measure until their own bodies hopefully learn to eliminate the virus without help.