HomeCovid 19 UpdatesPfizer Says Covid-19 Vaccine 100% Effective in Adolescents

Pfizer Says Covid-19 Vaccine 100% Effective in Adolescents

Pfizer and BioNTech’s says COVID-19 vaccine was 100 percent effective in protecting adolescents between the ages of 12 and 15 four months after the second dose.

The updated analysis of the Phase 3 clinical trial in children from 12 through 15 years of age was collected from November 2020 to September 2021.

Results from the 2,228 trial participants build upon and confirm previously released data and demonstrate strong protection against COVID-19. From the 30 confirmed symptomatic cases of COVID-19 in the trial with and without evidence of prior infection with SARS-CoV-2, 30 cases of COVID-19 were in the placebo group and 0 cases were in the Pfizer-BioNTech vaccine group, corresponding to a vaccine efficacy of 100%.

Pfizer says that the effectiveness was consistently high across gender, race and ethnicity demographics, obesity and comorbidity status.

The Pfizer-BioNTech COVID-19 Vaccine, which is based on BioNTech’s proprietary mRNA technology, was developed by both BioNTech and Pfizer. BioNTech is the Marketing Authorization Holder in the United States, the European Union, the United Kingdom, Canada, and other countries, and the holder of emergency use authorizations or equivalents in the United States (jointly with Pfizer) and other countries.

“These are the first and only disclosed longer-term data demonstrating the safety and efficacy of a COVID-19 vaccine in individuals 12 through 15 years of age,” said Ugur Sahin, CEO and Co-founder of BioNTech. “The growing body of data we have compiled from clinical trials and real-world surveillance to date strengthen the base of evidence supporting the strong efficacy and favorable safety profile of our COVID-19 vaccine across adolescent and adult populations.”

The companies said that the new data will help support their application for full worldwide approval.

Trending Now

Costa Rica’s Rebeca Grynspan Leads UN Race but Faces Two Potential Vetoes

Costa Rican diplomat Rebeca Grynspan remains the leading candidate to become the next secretary-general of the United Nations, but a new round of voting...

Costa Rica’s Capital Gets a Temporary Forest and Free Saturday Music

A temporary forest at the entrance to the Central Bank Museums will host a free music event Saturday, giving residents and visitors yet another...

Costa Rica Prison Faces Court Challenge Before Inmate Transfers Begin

A prisoners’ rights group has asked Costa Rica’s Constitutional Court to stop inmate transfers to the newly inaugurated CACCO prison, saying concerns about heat,...

Costa Rica’s Trash Problem Begins in Our Own Neighborhoods

I was walking up the street toward my house when I saw a young man coming from the other direction casually toss a bit...

Costa Rica Faces an $882 Million Revenue Hole as Courts, Police and Schools Take Cuts

Costa Rica expects to collect about ₡400,000 million ($882 million) less than it budgeted for 2026, and the Finance Ministry is asking lawmakers to...

El Niño Peak Expected in December With Record-Warm Pacific Waters, WMO Warns

El Niño has not peaked yet. The WMO expects it to keep strengthening until around December as Pacific waters head for record heat.

National Team Defender Among Four Held in Costa Rica Loan-Shark Extortion Probe

Cartaginés right-back Carlos Barahona, 24, was detained in pre-dawn raids in Cartago as a suspect in extortion tied to gota a gota loans.

Costa Rica Moves 2,700 Corals Deeper to Escape El Niño Heat

Scientists moved 2,700 corals at Isla Tortuga into deeper water as El Niño heat raises the risk of bleaching on Costa Rica reefs.

Costa Rica Owls: Camera Traps Reveal Their Hidden Live

Costa Rica is home to an array of owl species. They come in a variety of patterns, shapes, and sizes, but they have a...
Loading…

Latest News from Costa Rica

Costa Rica Coffee Maker Chorreador
Costa Rica Car Rentals
Costa Rica Travel Insurance
Costa Rica Travel