World PI Week
World PI Week 2026 | Bubble Foundation
From 22 to 29 April 2026, organisations worldwide will mark World PI Week, led by the International Patient Organisation for Primary Immunodeficiencies. The week focuses on raising awareness of primary immunodeficiencies, also known as inborn errors of immunity, and promoting earlier diagnosis and access to specialist care.
The Bubble Foundation supports children with life-threatening immune conditions connected to Ward 3 at the Great North Children's Hospital. World PI Week provides an opportunity to highlight the importance of specialist treatment, research and family support.
What is primary immunodeficiency?
Primary immunodeficiencies (PI) are rare genetic conditions that affect how the immune system works. Children with PI may experience:
Frequent or severe infections
Infections that are difficult to treat
Slow recovery from illness
The need for specialist hospital care
Early recognition and referral to a specialist centre can make a significant difference.
World PI Week 2026: What we’re focusing on
During 22 to 29 April, we will be sharing clear, accessible information about:
Signs and symptoms of primary immunodeficiency
The role of specialist centres in diagnosis and treatment
The clinical and research work connected to Newcastle
The wider support needed by families during long hospital stays
We will also encourage supporters to help raise awareness by sharing information, starting conversations, or making a donation.
Why awareness matters
Primary immunodeficiency is rare, and many people have never heard of it. Increasing understanding can support earlier diagnosis and help families access appropriate care more quickly.
World PI Week helps bring visibility to these conditions and to the work of organisations supporting affected children.
Get involved
If you would like to support children with primary immunodeficiency:
Share information during 22 to 29 April
Learn more about rare immune conditions
Consider making a donation to support treatment, research and family-centred care
World PI Week 2026 is a chance to raise awareness of primary immunodeficiency and recognise the importance of specialist care for children with rare immune disorders.