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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net loss $ (1,562,778) $ (595,694)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 4,517 994
Stock-based compensation expense 76,790 6,000
Changes in assets and liabilities:    
Grant funds and other receivables 182,663 (451,906)
Prepaid expenses and other current assets 35,659 27,425
Accounts payable and accrued expenses (357,878) 654,561
Total adjustments (58,249) 237,074
Net cash used in operating activities (1,621,027) (358,620)
Cash flows from investing activities
Cash flows from financing activities:    
Net proceeds from sale of common stock 9,408,920
Net proceeds from sale of preferred stock 300,000
Net proceeds from warrant exercises 3,174,156
Principal repayment of note payable (3,063) (2,914)
Net cash provided by financing activities 12,580,013 297,086
Net increase (decrease) in cash and cash equivalents 10,958,986 (61,534)
Cash and cash equivalents at beginning of period 9,883,796 283,341
Cash and cash equivalents at end of period $ 20,842,782 $ 221,807