The scarcity of drugs and vaccines is not due to a lack of innovation. Drugs have been in development for years, but since pharmaceutical companies have had no financial incentive to fund them, researchers have hit walls. “People like me and others who have worked for years in vaccines and countermeasures are frustrated,” Thomas Geisbert, a professor of microbiology and immunology at UTMB, said in an earlier TIME article. The supply of ZMapp, the drug that was given to a few health care workers, is exhausted. It comes from a small pharmaceutical company with nine employees, and the drug grows in a tobacco plant — requiring scientists to wait for a new crop to grow just for a new batch. Thankfully, clinical trials for other drugs have kicked off.