Scientists from Public Health England screened 469 clinical staff at one hospital trust in the north of England after two became ill with the contagious lung infection.

They found that 128 had latent TB, where the bug is dormant but can become infectious at any time.

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Dr Onkar Sahota, chairman of the London Assembly health committee, said: 'This is probably the same story up and down the country.' The human trial in South Africa, led by Professor Helen Mc Shane, went ahead based on the data prior to the PHE study, and half of the babies in the trial were given the new vaccine.

Families involved in the study, who were paid the equivalent of £10 to take part, were told the 'safe and effective' vaccine had been tested on both humans and animals.

The study was published in the journal Clinical and Vaccine Immunology.

Professor Beverley said: 'It certainly looks, when you look at the rate at which these animals died, that the MVA85A boosted group and the control untreated group all died rather rapidly.'But Professor Beverley claimed regulators weren't given the results of the PHE study, which wasn't testing the effectiveness of the jab but was a quest to find a new delivery mechanism, when they came to assess the application.

Professor Beverley told BBC's File on Four that 'there is no evidence whatsoever' that the experimental jab was effective following the results of the trial.

Professor Peter Beverley, a former principal research fellow at Oxford University, said scientists ignored worrying data, collected by Government officials, that showed primates given the booster tuberculosis jab seemed to 'die rather rapidly' (stock)The original Public Health England (PHE) monkey study in question, which began in 2006, involved 18 monkeys who were infected with TB.

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