Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current Assets:
Cash	$ 187,457	$ 76,576
Restricted cash	426,732	950,223
Short-term receivables		476
Prepaid expenses and other current assets	145,814	337,522
Total Current Assets	760,003	1,364,797
Equipment and furnishings, less accumulated depreciation of $117,685 and $110,994, respectively	5,329	12,020
Operating lease right-of-use asset	36,701	72,026
Total Assets	802,033	1,448,843
Current Liabilities:
Accounts payable	1,381,027	1,675,891
Unearned grant revenue	350,440	953,248
Other accrued expenses	1,558,339	3,240,436
Notes payable	110,544	277,815
Operating lease liability, current portion	37,714	48,077
Total Current Liabilities	6,224,763	9,016,895
Operating lease liability, non-current portion		25,299
Total Liabilities	6,224,763	9,042,194
Commitments, contingencies, and litigations (Note 12)
Stockholders’ Deficit:
Common stock; par value $0.001 per share; 1,000,000,000 shares authorized; 420,279,879 and 419,447,119 shares issued and outstanding at September 30, 2024 and December 31, 2023	420,280	419,522
Additional paid-in capital	249,258,870	244,714,967
Accumulated other comprehensive loss	(60,199)	(60,165)
Accumulated deficit	(255,055,650)	(252,690,409)
Total Stockholders’ Deficit	(5,422,730)	(7,593,351)
Total Liabilities and Stockholders’ Deficit	802,033	1,448,843
Series D Convertible Preferred Stock [Member]
Stockholders’ Deficit:
Preferred stock, value	957	12,373
Series D-1 Convertible Preferred Stock [Member]
Stockholders’ Deficit:
Preferred stock, value	13,012	10,361
Nonrelated Party [Member]
Current Liabilities:
Accrued interest	19,558	22,600
Convertible notes payable	453,000	800,000
Related Party [Member]
Current Liabilities:
Accrued interest	114,141	123,828
Convertible notes payable	$ 2,200,000	$ 1,875,000