Individuals who have recovered from COVID19  may have convalescent plasma in their blood, which has antibodies against the virus and could help with the development of a treatment for the virus. More information about how to donate with the New York Blood Center is available here:
Also, Mount Sinai is investigating antibody testing & blood plasma therapy as a way to combat coronavirus in sick patients. New Yorkers who have recovered from COVID19 & had a positive test before March 7th can possibly help save another by donating plasma