Developments GeoVax study suggests Ebola vaccine could provide 100% protection with single dose GeoVax Labs (OTCQB:GOVX) published research showing that a single intramuscular dose of its Ebola vaccine, GEO-EM01, provided 100% protection in rhesus macaques challenged with a lethal dose of Ebola virus. GEO-EM01... March 20, 2019