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Evaluating the effectiveness of the 10-valent pneumococcal conjugate vaccine in preventing invasive pneumococcal disease among Vietnamese children under 5 years of age

Evaluating the effectiveness of the 10-valent pneumococcal conjugate vaccine in preventing invasive pneumococcal disease among Vietnamese children under 5 years of age

Status
Unknown
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20201206002
Enrollment
1000
Registered
2020-12-06
Start date
2021-05-04
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Invasive pneumococcal disease PCV10, invasive pneumococcal disease, vaccine effectiveness

Interventions

A 2&#45
59 month&#45
old child with clinically suspected invasive disease (including meningitis and respiratory infections with bacteremia or sepsis) with all the following criteria: • Pneumococcus is isolated from his/
blood and CSF) taken as part of routine therapeutic practice. • A case&#45
patient who the investigator believes that his/her parent(s) or Legally Acceptable Representative(s) (LAR(s)) can and will comply with the requirements of the protocol Written informed consent obtaine
patients by age intervals (2&#45
<12&#44
12&#45
<24&#44
and 24&#45
59 months) and commune where case&#45
patients live before hospital admission.
Prevention,Prevention

Sponsors

Pasteur Institute in Ho Chi Minh City
Lead Sponsor

Eligibility

Sex/Gender
All
Age
2 Months to 59 Months

Inclusion criteria

Inclusion criteria: Case-patients: A 2-59 month-old child with clinically suspected invasive disease (including meningitis and respiratory infections with bacteremia or sepsis) will be eligible if all the following criteria are met: - Pneumococcus is isolated from his/her normal sterile body fluid (i.e., blood and CSF) taken as part of routine therapeutic practice. - A case-patient who the investigator believes that his/her parent(s) or Legally Acceptable Representative(s) (LAR(s)) can and will comply with the requirements of the protocol - Written informed consent obtained from the subject/from his/her parent(s) or LAR. Controls: At recruitment, controls are healthy children who are individually matched to case-patients by age intervals (2-&lt;12, 12-&lt;24, and 24-59 months) and commune where case-patients live before hospital admission. The age of a case-patient will be determined based on the culture-positive date. The age of a control will be determined at the time when the enrollment takes place.

Exclusion criteria

Exclusion criteria: A child who meet one of the following criteria: (1) his/her parent (s) or LAR are unable or refuse to consent; (2) he/she have neither birth certificates nor hospital birth registries; (3) he/she have no immunization records; (4) he/she has participated in a PCV trial.

Design outcomes

Primary

MeasureTime frame
VE of PCV10 against IPD caused by 10 PCV10-serotypes among children recommended to receiving PCV10 30/06/2024 Matched case-control study

Secondary

MeasureTime frame
Vaccine effectiveness of PCV10 against overall IPD among children receiving PCV10 30/06/2024 Matched case-control study ,VE of PCV10 against IPD caused by 10 PCV10 serotypes among subgroups of children receiving PCV10 30/06/2024 Matched case-control study ,Risk of IPD caused by non-PCV10 serotypes among children recommended to receiving PCV10 30/06/2024 Matched case-control study ,Risk factors among children recommended to receiving PCV10 30/06/2024 Matched case-control study

Countries

Vietnam

Contacts

Public ContactThuong Nguyen

Pasteur Institute in Ho Chi Minh city

nguyenthuong@yahoo.com0903121112

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026