HOUSTON Less than half of Americans say they will get the coronavirus vaccine if one is approved by the government. A third say theyre not sure. I think you can be pretty confident that those vaccines, no vaccine is going to be out there unless it works or its safe, Dr. Hotez said. Since scientists across the globe have turned their focus on coronavirus, and thousands of volunteers are rolling up their sleeves to take part in these trials, Hotez has confidence one will be safe when it becomes available. Even though he thinks it may take a few generations of a vaccine before we get the best one.