Seasonal flu jabs could double the risk of developing swine flu, researchers have claimed.
The findings from Canada led to some states in the country delaying seasonal flu jab campaigns amid fears the recipients could be more vulnerable to a second surge of the pandemic.
The UK’s Joint Committee on Vaccination and Immunisation (JCVI), an independent advisory group, says the study’s findings have not been substantiated in any other country.
The World Health Organisation has also dismissed them, and separate research suggests seasonal flu jabs might actually protect against swine flu.
Last week, GPs across the UK began their seasonal flu campaign, which aims to protect more than 15million people, including those aged over 65 and those with long-term conditions such as heart disease.
