Influenza

• The First People's Hospital of Changde — Changde, China
• Peoples Hospital of Hunan Province — Changsha, China
• Chengdu Women's and Children's Central Hospital — Chengdu, China
• Chongqing University Jiangjin Hospital — Chongqing, China

• Center for Vaccinology — Ghent, Corneel Heymanslaan 10, Belgium

• Haizhou District Center for Disease Control and Prevention — Lianyungang, Jiangsu, China

• Hope Clinic of the Emory Vaccine Center — Decatur, Georgia, United States

• Credo Diagnostics Biomedical Pte Ltd. Taiwan Branch — New Taipei City, Taiwan

• China-Japan Friendship hospital — Beijing, Beijing Municipality, China

• Pfizer Clinical Research Unit - New Haven — New Haven, Connecticut, United States
• Research Centers of America — Hollywood, Florida, United States
• NYU Langone Health — New York, United States

Not specified

• Anaheim Clinical Trials, LLC — Anaheim, California, United States
• Orange County Research Center — Lake Forest, California, United States
• Artemis Institute for Clinical Research — Riverside, California, United States
• Artemis Institute for Clinical Research — San Diego, California, United States

• UCLA — Los Angeles, California, United States