H1N1 has killed 2,837, virus has not mutated -WHO

GENEVA, (Reuters) – H1N1 flu has killed at least  2,837 people but is not causing more severe illness than  previously and the virus has not mutated, the World Health  Organisation (WHO) said yesterday.

The United Nations agency is monitoring the strain, commonly  known as swine flu, to detect any mutation which might signal  that it has become more deadly.

“There is no sense that the virus has mutated or changed in  any sense,” WHO spokesman Gregory Hartl told a news briefing.  “We are continuing to see increased number of deaths because we  are seeing many, many more cases.”

About a quarter of a million cases have been  laboratory-confirmed worldwide, but this is far fewer than the  true number according to the WHO which has stopped requiring its  193 member states to report individual cases.