BALTIMORE – A graduate student in Maryland believes that he may be the first person to be successfully vaccinated against the coronavirus.David Rach became the first person to be injected with a trial COVID-19 vaccine, made by Pfizer, at the University of Maryland School of Medicine.According to researchers, early indications show the vaccine is working by stimulating the growth of antibodies at rates equal or higher to those who have the illness.“There is also a component of relief seeing that it’s actually producing results that the vaccine is producing antibodies,” Rach said.Rach isn’t sure if he received the actual vaccine or a saline solution, but after a slight reaction from receiving a second dose, he believes he is one of the very.