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Note 12 - Subsequent Events	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	12.      Subsequent Events In April 2018, NIAID awarded us a Fast Track Phase I/II Small Business Innovative Research (SBIR) grant entitled “ Construction and efficacy testing of novel recombinant vaccine designs for eliciting both broadly neutralizing antibodies and T cells against Lassa virus .” The initial Phase I grant award is $299,820 for the project period April 9, 2018 to March  31, 2019. During April 2018, we issued 10,000,000 shares of our common stock pursuant to the conversion of 150 shares of our Series D Preferred Stock.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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