Mexico has ramped up its containment efforts
Mexican authorities have taken drastic measures to contain a new strain of the swine flu virus that has killed 81 and prompted fears of a global pandemic.
People are being urged to stay at home and maintain strict personal hygiene. Many schools, public buildings, bars and restaurants have been closed.
Non-fatal cases have been confirmed in the US and are likely in New Zealand.
The World Health Organization (WHO) has confirmed that at least some of the cases are a new strain of the virus.
SWINE FLU
Swine flu is a respiratory disease found in pigs
Human cases usually occur in those who have contact with pigs
Human-to-human transmission is rare and such cases are closely monitored
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Authorities around the world are increasingly vigilant