The state of COVID-19 vaccine research is currently in a Catch-22 dilemma, according to Dr. William Klimstra, an associate professor in the Immunology Department at the University of Pittsburgh, who is currently working on a potential vaccine. The dilemma is this: The reason the development of a vaccine takes so long is that scientists have to be careful the vaccine does no harm in animals first and then in humans, before it even begins to test whether it’s effective. But at the same time, many Americans are not convinced that a vaccine would be safe and have said they wouldn’t take it even if it was developed. “We’re in an environment right now where longstanding accepted truths are being challenged through social media,” Klimstra said. "It’s very difficult to fight that kind of stuff."