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EMA reviews GSK (NYSE: GSK) plan for 1-dose Bexsero meningitis B booster

(Neutral)
(Neutral)
Form Type
6-K

Rhea-AI Filing Summary

GSK reports that the European Medicines Agency has accepted a submission to update the label for Bexsero to include a single-dose booster for individuals aged 10 years and older who were previously vaccinated with Bexsero. If approved, this booster could help reduce the burden of Invasive Meningococcal Disease (IMD) in countries with established infant MenB programmes.

The submission is supported by a Phase 3b, open-label, multicentre study in 10 to 20-year-olds showing one booster dose effectively boosted immune responses in those vaccinated as infants. IMD is a rare, life‑threatening disease with a fatality rate of 4–20%, and up to 20% of survivors experience severe, life-changing sequelae. In 2024, serogroup B caused 56% of IMD cases under age 65 in the EU/EEA. Bexsero is registered in 61 countries, included in multiple European immunisation programmes, and around 138 million doses have been distributed globally since 2015.

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Filing Explained

The filing sets September’s 25th International Pathogenic Neisseria Conference as the point for presenting full booster-study data; the EMA-accepted submission still awaits a decision, so the one-dose label change is not yet approved.

Booster age eligibility 10 years and older Proposed single-dose Bexsero booster population
Clinical study age range 10 to 20 years Phase 3b open-label multicentre booster study
IMD fatality rate 4-20% Reported fatality rate for invasive meningococcal disease
Survivors with sequelae Up to 20% IMD survivors experiencing severe, life-changing sequelae
Serogroup B share of IMD 56% 2024 EU/EEA IMD cases under 65 due to serogroup B
Highest IMD notification rate 6.3 cases per 100 000 Young children less than 1 year old in EU/EEA, 2024
Countries where Bexsero is registered 61 countries Global registration footprint for Bexsero
Bexsero doses distributed 138 million doses Global doses shipped from 2015 to October 2025
European Medicines Agency regulatory
"announced the European Medicines Agency (EMA) has accepted a submission"
The European Medicines Agency is the central drug regulator that evaluates and authorizes medicines for use across the European Union and related countries, similar to a referee or safety inspector who checks that a medicine is safe and effective before it can be sold. Its decisions matter to investors because approvals, rejections, or safety warnings directly affect a drug maker’s ability to sell products, generate revenue, and face legal or reputational risks, which in turn influence stock value.
Invasive Meningococcal Disease medical
"a booster could help reduce the overall burden of Invasive Meningococcal Disease"
serogroup B medical
"for the prevention of IMD caused by Neisseria meningitidis serogroup B"
Phase 3b medical
"supported by a Phase 3b, open-label, multi-centre study"
Phase 3b is an additional clinical trial stage run after the main large-scale efficacy studies but usually before or around regulatory approval; it gathers extra information on safety, dosing, specific patient groups, or real-world use to strengthen understanding of a medicine. For investors, phase 3b studies can change approval details, usage guidelines or market potential—think of them as final rehearsals that can alter the product’s launch plan and commercial prospects.
immunisation programmes medical
"included in 15 national and/or regional immunisation programmes for infants"

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FAQ

What did GSK (GSK) announce regarding the Bexsero vaccine?

GSK announced that the European Medicines Agency has accepted its submission to update the Bexsero label to add a single-dose booster for individuals aged 10 years and older who were previously vaccinated, supported by Phase 3b immunogenicity data.

Who would be eligible for the proposed Bexsero booster according to GSK (GSK)?

If approved, the updated label would allow a single Bexsero booster for people aged 10 years and older who completed their primary Bexsero series in infancy, potentially extending protection into adolescence and young adulthood.

What clinical evidence supports GSK’s (GSK) Bexsero booster submission?

The submission is backed by a Phase 3b, open-label, multicentre study in individuals aged 10 to 20 years, showing a single Bexsero booster dose effectively boosted immune responses in those vaccinated during infancy. Full data are planned for presentation at IPNC.

How serious is invasive meningococcal disease (IMD) in the population GSK (GSK) targets?

IMD is a life-threatening disease with a 4–20% fatality rate, and up to 20% of survivors have severe, lasting sequelae. Incidence peaks in infants and in adolescents and young adults, linked to close-contact behaviours.

How widely used is Bexsero globally, according to GSK (GSK)?

Bexsero is registered in 61 countries and included in 15 infant and 3 adolescent immunisation programmes in Europe. GSK reports around 138 million doses have been distributed globally since 2015.

What role does serogroup B play in IMD cases relevant to GSK (GSK)?

In 2024, 56% of confirmed IMD cases in the EU/EEA across people under 65 were due to serogroup B, the strain targeted by Bexsero, highlighting the continued epidemiological relevance of this vaccine.

 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
Form 6-K
 
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
 
 
 
For the month of July 2026
 
Commission File Number 001-15170
 
 
GSK plc
(Translation of registrant's name into English)
 
 
79 New Oxford Street, London, WC1A 1DG
(Address of principal executive office)
 
 
 
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
 
Form 20-F . . . .X. . . . Form 40-F . . . . . . . .
 
 
 
 
 
Issued: 20 July 2026, London UK
 
European Medicines Agency accepts submission to update Bexsero label for 1-dose Meningitis B booster in 10+ year olds
If approved, a single booster dose could help protect individuals who were previously vaccinated with Bexsero
 
 
 
GSK plc (LSE/NYSE: GSK) today announced the European Medicines Agency (EMA) has accepted a submission to update the label for Bexsero to include a single dose booster for individuals aged 10 years and older who were previously vaccinated with Bexsero.
 
If a one-dose booster is approved, those vaccinated with Bexsero in childhood could receive a single Bexsero dose at age 10 years or older. If adopted, a booster could help reduce the overall burden of Invasive Meningococcal Disease (IMD) in countries with established infant MenB programmes.
 
IMD is an uncommon but severe illness caused by Neisseria meningitidis. While the highest incidence is in infants and young children, there is also a peak in 15-24 year olds1,2, often linked to behaviours that increase transmission, such as close contact through kissing, sharing drinks, and living in shared accommodation3.
 
The submission is supported by a Phase 3b, open-label, multi-centre study that evaluated the immune response of a Bexsero booster dose in individuals 10 to 20 years old who received the complete primary series during infancy. The data show a single dose was effective in boosting the immune responses of individuals vaccinated as infants. Full data will be presented at the 25th International Pathogenic Neisseria Conference (IPNC) in September.
 
About invasive meningococcal disease (IMD)
Invasive meningococcal disease (IMD) is a rare, life-threatening disease caused by Neisseria meningitidis that can progress rapidly and has a fatality rate of 4-20%4. Up to 20% of IMD survivors have severe, life-changing sequelae, and the physical and psychological consequences of IMD can substantially impact quality of life5. In 2024 in the European Union/European Economic Area, 56% of confirmed cases of IMD were due to serogroup B in all age groups under 65 years. The notification rate for IMD was highest among young children less than 1 year old (6.3 cases per 100 000), followed by children aged 1-4 years (1.38 confirmed cases per 100 000) and third highest in adolescents and young adults aged 15-24 years (0.83 per 100 000)1.
 
About Bexsero (4CMenB)
Bexsero is registered in 61 countries for the prevention of Invasive Meningococcal Disease (IMD) caused by Neisseria meningitidis serogroup B. In Europe, it is included in 15 national and/or regional immunisation programmes for infants, and 3 national immunisation programmes for adolescents. Around 138 million doses of Bexsero have been distributed globally since 20156.
 
 
About GSK
GSK is a global biopharma company with a purpose to unite science, technology, and talent to get ahead of disease together. Find out more at www.gsk.com.
 
GSK enquiries
 
 
 
Media:
Simon Moore
+44 (0) 20 8047 5502
(London)
 
Kathleen Quinn
+1 202 603 5003
(Washington DC)
Investor Relations:
Constantin Fest
+44 (0) 7831 826525
(London)
 
James Dodwell
+44 (0) 20 8047 2406
(London)
 
Mick Readey
+44 (0) 7990 339653
(London)
 
Steph Mountifield
+44 (0) 7796 707505
(London)
 
Sam Piper
+44 (0) 7824 525779
(London)
 
Jeff McLaughlin
+1 215 751 7002
(Philadelphia)
 
Frannie DeFranco
+1 215 751 3126
(Philadelphia)
 
 
Cautionary statement regarding forward-looking statements
GSK cautions investors that any forward-looking statements or projections made by GSK, including those made in this announcement, are subject to risks and uncertainties that may cause actual results to differ materially from those projected. Such factors include, but are not limited to, those described in the "Risk Factors" section in GSK's Annual Report on Form 20-F for 2025, and GSK's Q1 Results for 2026.
 
 
Registered in England & Wales:
No. 3888792
 
 
Registered Office: 
79 New Oxford Street
London
WC1A 1DG
 
 
References
 
1.     European Centre for Disease Prevention and Control (ECDC). Invasive meningococcal disease: Annual Epidemiological Report for 2024 Available at: https://www.ecdc.europa.eu/sites/default/files/documents/invasive-meningococcal-disease-annual-epidemiological-report-2024.pdf. Last accessed: June 2026
2.     UKHSA 2013, Meningococcal: the green book, chapter 22. Available at: <https://assets.publishing.service.gov.uk/media/6849adb83a2aa5ba84d1df71/Meningococcal-green_book_chapter-22-10-6-25.pdf> Last accessed: June 2026
3.     Burman C, Serra L, Nuttens C, et al. Meningococcal disease in adolescents and young adults: a review of the rationale for prevention through vaccination. Human Vaccines & Immunotherapeutics. 2019 ;15(2):459-469. <https://doi.org/10.1080/21645515.2018.1528831
4.     Wang B et al. Vaccine 2019;37:2768-2782.
5.     Centers for Disease Control and Prevention. https://www.cdc.gov/pinkbook/hcp/table-of-contents/chapter-14-meningococcal-disease.html. Last accessed June 2026.
6.     GSK Data on file, REF-310855. 138 million doses shipped from 2015 to October 2025.
 
 
 
SIGNATURES
 
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorised.
 
GSK plc
 
(Registrant)
 
 
Date: July 20, 2026
 
 
 
 
By:/s/ VICTORIA WHYTE
--------------------------
 
 
 
Victoria Whyte
 
Authorised Signatory for and on
 
behalf of GSK plc