The emergence of the swine flu has raised many questions ; here are some answers . Swine flu was first identified in 1930 when researchers isolated the virus in a pig . It is not known how it came to be, but scientists believe that pigs were infected by eating contaminated food or drinking water from an animal farm. This is the big mystery doctors are trying to solve right now . While the virus can live on surfaces , transmission is unlikely .
The emergence of the swine flu has raised many questions ; here are some answers . Swine flu was first identified in 1930 when researchers isolated the virus in a pig . It is not known how it came to be, but scientists believe that pigs were infected by eating contaminated food or drinking water from an animal farm. While the virus can live on surfaces , transmission is unlikely .