But it said evidence revealed the general UK population was not at increased risk of TB, HIV or malaria infection from migrants, but some UK-born ethnic communities did have a higher risk of disease because of their links to countries where the diseases were endemic.

BBC: NEWS | Health | Migrants 'carry disease burden'

Vaccination is not effective in badgers or cattle that are infected with TB.

BBC: Q&A: The badger cull

Dr Gerard said that although his department at Gatwick regularly screened immigrants and asylum seekers for TB that they had not so far encountered any of the rarer illnesses such as Ebola or Lassa Fever, but he said they were alert to the threat.

BBC: GPs warned to be ready for smallpox