Table 1. Donor Characteristics.

Donor	Age	Gender	Hospitalized	Intubated	Time of Collection from End of Symptoms	RBD IgG detection: fold serum dilution	Plasma at Infusion—Fresh or Frozen	Infusion volume (mL)
Don01	53	M	No	No	27	1,000–10,000	Fresh	500
Don02	53	M	Unknown	Unknown	16	500–1,000	Fresh	500
Don03	59	M	No	No	25	>10,000	Fresh	500
Don04	38	M	Unknown	Unknown	23	1,000–10,000	Fresh	500
Don05	60	M	Unknown	Unknown	21	1,000–10,000	Fresh	500
Don06	33	M	No	No	28	>10,000	Fresh	500
Don07	30	F	No	No	29	>10,000	Frozen	400
Don08	52	M	No	No	28	>10,000	Frozen	400
Don09	23	M	Unknown	Unknown	26	500–1,000	Fresh	500
Don10 *	59	F	No	No	27	1,000–10,000	Frozen	400
Don11 *	59	F	No	No	27	1,000–10,000	Fresh	500
Don12	49	M	Unknown	Unknown	23	>10,000	Fresh	500
Don13	55	M	No	No	29	1,000–10,000	Fresh	500
Don14	43	M	Unknown	Unknown	22	1,000–10,000	Fresh	500
Don15	59	M	Unknown	Unknown	26	1,000–10,000	Fresh	500
Don16	47	M	Yes	No	24	>10,000	Fresh	500
Don17	47	F	No	No	23	1,000–10,000	Frozen	400
Don18	53	M	No	No	26	>10,000	Fresh	500
Don19	39	F	Yes	?	25	>10,000	Frozen	400
Don21 **	37	M	Yes	No	34	1,000–10,000	Fresh	500
Don22 **	37	M	Yes	No	34	1,000–10,000	Frozen	400
Don23	40	M	No	No	29	1,000–10,000	Fresh	500
Don24	48	M	No	No	35	1,000–10,000	Fresh	500
Don25	56	M	Unknown	Unknown	29	1,000–10,000	Fresh	500
Don26	49	M	No	No	30	1,000–10,000	Fresh	500
Don27	31	M	Unknown	Unknown	34	1,000–10,000	Fresh	500
Don29	22	F	Unknown	Unknown	27	1,000–10,000	Frozen	400
Don33 ***	21	F	No	No	31	1,000–10,000	Frozen	400
Don34	50	M	Unknown	Unknown	39	1,000–10,000	Fresh	500
Don35	55	M	No	No	28	1,000–10,000	Fresh	500
Don36	57	M	No	No	44	1,000–10,000	Fresh	500
Don37	57	M	Unknown	Unknown	34	>10,000	Fresh	500
Don38	36	M	Yes	Yes	36	1,000–10,000	Fresh	500
Don39 ***	21	F	No	No	31	1,000–10,000	Frozen	400
Don40	54	M	No	No	32	1,000–10,000	Fresh	500

* Donor 10 and Donor 11 are the same

** Don21 and Don22 are the same

*** Donor 33 and Donor 39 are the same