<p>Data from the Health Protection Agency revealed 334 confirmed cases by the end of April. There were only 374 cases during 2010.<br /><br />London has been the worst affected area with 104 cases.<br /><br />Health officials have urged everyone to ensure they are immunised against the potentially deadly infection.<br /><br />Small outbreaks have been reported from universities and schools, while some reportedly caught the disease after travelling abroad.<br /><br />Europe is also facing a surge in measles cases. In mid-April, the World Health Organisation (WHO) warned of over 6,500 cases in 33 European countries, with France being worst hit with 5,000 cases.<br /><br />In Britain, people under 25 have been the most affected this year.<br /><br />Mary Ramsay, head of the Health Protection Agency's immunisation department, said: "We cannot stress enough that measles is serious and, in some cases, it can be fatal. Measles is a highly infectious and potentially dangerous illness which spreads very easily. </p>.<p>Whether you stay here in Britain or travel abroad, it is crucial that individuals who may be at risk are fully immunised."<br /></p>
<p>Data from the Health Protection Agency revealed 334 confirmed cases by the end of April. There were only 374 cases during 2010.<br /><br />London has been the worst affected area with 104 cases.<br /><br />Health officials have urged everyone to ensure they are immunised against the potentially deadly infection.<br /><br />Small outbreaks have been reported from universities and schools, while some reportedly caught the disease after travelling abroad.<br /><br />Europe is also facing a surge in measles cases. In mid-April, the World Health Organisation (WHO) warned of over 6,500 cases in 33 European countries, with France being worst hit with 5,000 cases.<br /><br />In Britain, people under 25 have been the most affected this year.<br /><br />Mary Ramsay, head of the Health Protection Agency's immunisation department, said: "We cannot stress enough that measles is serious and, in some cases, it can be fatal. Measles is a highly infectious and potentially dangerous illness which spreads very easily. </p>.<p>Whether you stay here in Britain or travel abroad, it is crucial that individuals who may be at risk are fully immunised."<br /></p>