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H. pylori in Aotearoa New Zealand Study

The H. pylori in Aotearoa New Zealand (HPANZ) study looks at how common Helicobacter pylori is in NZ. The University of Otago is inviting people to participate in this study.

H. pylori is a bacteria that many people have in their stomach. In a small number of people, it can cause stomach problems such as inflammation and ulcers. Over a long time this can increase the risk of stomach cancer, usually later in life. The good news is that H. pylori is easy to treat, and antibiotics can get rid of H. pylori for most people. This study will see who has H. pylori infection and whether having the infection overlaps with other risk factors for stomach cancer. This information is necessary to help with designing new approaches to prevent stomach cancer in Aotearoa New Zealand.

About the survey

Getting a better understanding of how many people in Aotearoa New Zealand have H. pylori is an important step in planning future stomach cancer prevention measures in Aotearoa New Zealand and improving how we test and treat for H. pylori infection.

Survey methodology and information

The study is being conducted by the University of Otago in conjunction with Reach Aotearoa Ipsos (an independent New Zealand research company) carrying out the survey and helping to co-ordinate the testing. The project has been approved by the Health and Disability Ethics Committee (Ref #: 2023 FULL 15361)

If you have been invited to join the study, you should have received an invitation letter with an information sheet that describes what you will be asked to do.

The survey participants will be drawn from the pool of people who have previously taken part in the New Zealand Health Survey (NZHS) and agreed to be contacted about taking part in other research of importance to the Ministry of Health. The Ministry of Health’s NZHS team has reviewed this project and given their approval for recontact for this project.

The study is aiming to recruit a total of around 1200 participants in 2024.

Contact details

If you have been invited into the study and have questions about doing the interview or providing a sample for the study, please contact Reach Aotearoa Ipsos:

Tel 0800 478 783


Text: BUG to 8009 (followed by your message)

If you have any questions about the study (including the study aims, what we will do with the information in the study) you can contact:

Dr James Stanley, Co-Principal Investigator
Tel +64 04 832 3129

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