Broader pneumonia protection for babies? new vaccine trial shows promise

NCT ID NCT01692886

Completed ⭐️ VACCINE ⭐️ Sponsor: Pfizer Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase 3 trial tested a 13-valent pneumococcal vaccine (13vPnC) against the older 7-valent version in over 1,600 healthy infants in China. The goal was to see if the newer vaccine triggers a stronger immune response and is just as safe. Infants received four doses starting at 3 months old, and researchers measured antibody levels and side effects.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: 13-valent pneumococcal conjugate vaccine (13vPnC)
What this could lead to: If successful, this vaccine could provide broader protection against pneumococcal infections in infants, reducing the risk of serious diseases like pneumonia and meningitis.
What could go wrong: This trial is completed, so results are available. However, the vaccine may not be as effective in real-world settings or may cause side effects like fever or injection-site reactions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

pneumococcal infection prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

PNEUMOCOCCAL INFECTION

Contacts and locations

Locations

Jiangsu Province Guanyun County Center for Disease prevention and Control

Guanyun County,, Jiangsu, 222200, China
Jiangsu Province Hongze County Center for Disease prevention and Control

Huaian City, Jiangsu, 223100, China
Jiangsu Province Huaiyin District Center for Disease prevention and Control

Huaian City,, Jiangsu, 223300, China
Jiangsu Province Lianshui County Center for Disease prevention and Control

Lianshui County, Jiangsu, 223400, China

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