Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 682,984	$ 97,231
Restricted cash	2,423,958
Short-term receivables	5,107	3,930
Prepaid expenses and other current assets	329,908	322,518
Total Current Assets	3,441,957	423,679
Equipment and furnishings, less accumulated depreciation of $91,178 and $78,313, respectively	31,836	44,701
Operating lease right-of-use asset	39,563	120,821
Total Assets	3,513,356	589,201
Current Liabilities:
Accounts payable	1,287,459	956,860
Deposit for purchase of Series D-1 Preferred Stock	150,000
Unearned grant revenue	2,500,000
Other accrued expenses	2,002,486	1,500,782
Accrued interest	10,578	2,774,968
Accrued interest - related parties	6,044	1,766,493
Notes payable	238,452	236,228
Convertible notes payable	1,260,000	16,622,000
Convertible notes payable - related parties	200,000	6,770,000
Operating lease liability	45,617	84,383
Total Current Liabilities	7,700,636	30,711,714
Note payable, non-current portion		39,061
Operating lease liability, non-current portion		44,783
Total Liabilities	7,700,636	30,795,558
Stockholders’ Deficiency:
Common stock; par value $0.001 per share; 1,000,000,000 shares authorized; 419,447,119 and 398,807,037 shares issued and outstanding at December 31, 2021 and 2020, respectively	419,447	398,808
Additional paid-in capital	241,440,106	209,923,347
Accumulated other comprehensive loss	(34,467)	(34,097)
Accumulated deficit	(246,033,958)	(240,494,415)
Total Stockholders’ Deficiency	(4,187,280)	(30,206,357)
Total Liabilities and Stockholders’ Deficiency	3,513,356	589,201
Series B Convertible Preferred Stock [Member]
Stockholders’ Deficiency:
Preferred stock value
Series D Convertible Preferred Stock [Member]
Stockholders’ Deficiency:
Preferred stock value	12,373
Series D-1 Convertible Preferred Stock [Member]
Stockholders’ Deficiency:
Preferred stock value	$ 9,219