Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Grant revenue	$ 1,850		$ 26,165
Operating expenses:
Research and development	2,762,170	2,567,771	8,040,422	4,803,313
General and administrative	2,351,007	1,274,803	4,998,422	2,892,727
Total operating expenses	5,113,177	3,842,574	13,038,844	7,696,040
Loss from operations	(5,111,327)	(3,842,574)	(13,012,679)	(7,696,040)
Other income:
Other income	441,546		672,824
Interest income	14,069	25,995	29,568	82,263
Total other income	455,615	25,995	702,392	82,263
Net loss	$ (4,655,712)	$ (3,816,579)	$ (12,310,287)	$ (7,613,777)
Net loss per share, basic and diluted (in Dollars per share)	$ (0.18)	$ (0.20)	$ (0.51)	$ (0.40)
Weighted average common shares outstanding, basic and diluted (in Shares)	25,369,144	19,071,658	24,261,032	19,040,134
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (4,655,712)	$ (3,816,579)	$ (12,310,287)	$ (7,613,777)
Other comprehensive loss:
Foreign currency translation adjustments	(27,334)	(19,208)	(65,292)	(39,491)
Comprehensive loss	$ (4,683,046)	$ (3,835,787)	$ (12,375,579)	$ (7,653,268)