`` I would advise them to maintain vigilance , enhance surveillance and be prepared for the arrival of the novel H1N1 in their country . '' Further spread of swine flu inevitable , World Health Organization says . WHO calls H1N1 a global pandemic , raises alert to highest level . U.N. agency says that does n't mean disease is worse , but that it 's in more countries . Comment:
Further spread of swine flu inevitable , World Health Organization says . WHO calls H1N1 a global pandemic , raises alert to highest level . U.N. agency says that does n't mean disease is worse , but that it 's in more countries . Comment: