Study of the Safety and Immunogenicity of Catch-up Vaccination With a 21-valent Pneumococcal Conjugate Vaccine (PCV21) in Healthy Infants, Toddlers, Children, and Adolescents

PHASE3Active, not recruitingINTERVENTIONAL
Enrollment

1,268

Participants

Timeline

Start Date

February 28, 2025

Primary Completion Date

December 1, 2026

Study Completion Date

December 1, 2026

Conditions
Pneumococcal Infections
Interventions
BIOLOGICAL

PCV21

Investigational pneumococcal conjugate vaccine

BIOLOGICAL

20vPCV

20-valent pneumococcal conjugate vaccine

Trial Locations (38)

10117

Site # 2330006, Tallinn

10270

Site # 7640008, Bangkok

10400

Site # 7640006, Bangkok

Site # 7640007, Bangkok

13619

Site # 2330007, Tallinn

13905

Site #8400010, Binghamton

14642

Site # 8400025, Rochester

30214

Site # 8400021, Fayetteville

30291

Site # 8400004, Union City

32934

Site # 8400014, Melbourne

33012

Site # 8400007, Hialeah

33166

Site # 8400024, Doral

Site # 8400009, Miami

Site # 8400016, Miami

39531

Site # 8400018, Biloxi

Site # 8400012, Ridgeland

41018

Site # 8400023, Erlanger

50106

Site # 2330005, Tartu

50200

Site # 7640003, Mueang Nonthaburi

Site # 7640004, Chiang Mai

50708

Site # 2330004, Tartu

51106

Site # 8400003, Sioux City

68114

Site # 8400002, Omaha

72713

Site # 2330001, Paide

76401

Site # 8400017, Stephenville

77065

Site # 8400001, Houston

90112

Site # 7640002, Hat Yai

90723

Site # 8400008, Paramount

EE-10617

Site # 2330002, Tallinn

Site # 2330003, Tallinn

91-341

Site # 6160009, Lodz

03-291

Site # 6160007, Warsaw

42-200

Site # 6160003, Częstochowa

85-048

Site # 6160002, Bydgoszcz

85-796

Site # 6160004, Bydgoszcz

57-300

Site # 6160006, Kłodzko

87-100

Site # 6160001, Torun

Unknown

Site # 7640001, Pathum Thani

All Listed Sponsors
lead

Sanofi Pasteur, a Sanofi Company

INDUSTRY