Affiliation: | 1Morehouse School of Medicine Department of Microbiology, Biochemistry and Immunology, Atlanta, Georgia, United States of America;2University of Alabama at Birmingham Department of Microbiology, Birmingham, Alabama, United States of America;3State Key Laboratory for Infectious Disease Prevention and Control, and National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, China |