The purpose of this study is to learn about how the flu and COVID vaccines act when givenalone or when mixed together.This study is seeking healthy participants aged 18 or older. All participants in thisstudy will receive only 1 shot to their arm, either a flu or COVID vaccine, alone ormixed. Participants will take part in this study for about 6 months, and participantswill need to visit the clinical study site at least 4 times.
Not Provided
Biological: Investigational Influenza Vaccine
Investigational Influenza Vaccine
Biological: Investigational COVID-19 Vaccine
Investigational COVID-19 Vaccine
Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Investigational Combined Influenza and COVID-19 Vaccine
Biological: Licensed Influenza Vaccine 1
Licensed Influenza Vaccine 1
Biological: Licensed Influenza Vaccine 2
Licensed Influenza Vaccine 2
Biological: Licensed Influenza Vaccine 3
Licensed Influenza Vaccine 3
Biological: Licensed COVID-19 Vaccine
Pfizer-BioNTech COVID-19 Vaccine
Inclusion criteria:
- Participants 18 years of age or older
  -  Healthy participants who are determined by medical history, physical examination (if
     clinically required), and clinical judgement of the investigator to be eligible for
     inclusion in the study
Exclusion criteria:
  -  Vaccination with any investigational or licensed influenza vaccine within 150 days
     of enrollment
  -  Vaccination with any investigational or licensed COVID 19 vaccine within 150 days of
     enrollment.
  -  Receipt of antiviral therapies for influenza (eg, Tamiflu) within 180 days prior to
     Day 1.
Refer to the study contact for further eligibility details
Anaheim Clinical Trials, LLC
Anaheim	5323810, California	5332921, United States
Orange County Research Center
Lake Forest	5364514, California	5332921, United States
Artemis Institute for Clinical Research
Riverside	5387877, California	5332921, United States
Artemis Institute for Clinical Research
San Diego	5391811, California	5332921, United States
Diablo Clinical Research, Inc.
Walnut Creek	5406990, California	5332921, United States
Clinical Research Consulting
Milford	4838652, Connecticut	4831725, United States
Alliance for Multispecialty Research, LLC
Coral Gables	4151871, Florida	4155751, United States
Indago Research & Health Center, Inc
Hialeah	4158476, Florida	4155751, United States
Miami Dade Medical Research Institute, LLC
Miami	4164138, Florida	4155751, United States
Palm Springs Community Health Center
Miami Lakes	4164186, Florida	4155751, United States
Clinical Research Atlanta
Stockbridge	4224681, Georgia	4197000, United States
East-West Medical Research Institute
Honolulu	5856195, Hawaii	5855797, United States
Clinical Research Professionals
Chesterfield	4381072, Missouri	4398678, United States
Las Vegas Clinical Trials
North Las Vegas	5509403, Nevada	5509151, United States
Upstate Global Health Institute
East Syracuse	5116079, New York	5128638, United States
University of Rochester Medical Center
Rochester	5134086, New York	5128638, United States
Trial Management Associates - Wilmington - Floral Parkway
Wilmington	4499379, North Carolina	4482348, United States
Centricity Research Columbus Ohio Multispecialty
Columbus	4509177, Ohio	5165418, United States
DM Clinical Research - Philadelphia
Philadelphia	4560349, Pennsylvania	6254927, United States
Coastal Carolina Research Center
North Charleston	4589387, South Carolina	4597040, United States
AMR Clinical
Knoxville	4634946, Tennessee	4662168, United States
AMR Clinical
Knoxville	4634946, Tennessee	4662168, United States
Clinical Research Associates Inc
Nashville	4644585, Tennessee	4662168, United States
Headlands Horizons, LLC dba Headlands Research-Brownsville
Brownsville	4676740, Texas	4736286, United States
DM Clinical Research- Cyfair
Houston	4699066, Texas	4736286, United States
SMS Clinical Research
Mesquite	4710826, Texas	4736286, United States
Dynamed Clinical Research, LP d/b/a DM Clinical Research
Tomball	4737094, Texas	4736286, United States
J. Lewis Research, Inc. / Foothill Family Clinic
Salt Lake City	5780993, Utah	5549030, United States
J. Lewis Research, Inc. / Foothill Family Clinic South
Salt Lake City	5780993, Utah	5549030, United States
Charlottesville Medical Research
Charlottesville	4752031, Virginia	6254928, United States
Kaiser Permanente Washington Health Research Institute (KPWHRI)
Seattle	5809844, Washington	5815135, United States
Pfizer CT.gov Call Center
1-800-718-1021
ClinicalTrials.gov_Inquiries@pfizer.com
Pfizer CT.gov Call Center, Study Director
 Pfizer