41.   Responding to an outbreak of deadly swine fever, European Union farm officials on Thursday proposed a ban on pig exports from several German states.

42.   Since there is no vaccine against swine fever, the only defense against its spread is to destroy all the pigs in the infected area, FAO said.

43.   Slaughterhouses were Friday destroying thousands of pigs in the central Netherlands in an attempt to control an outbreak of swine fever.

44.   Swine fever can be spread by contact with contaminated mud and manure from infected farms.

45.   Swine fever has spread from one northern German region to another, state officials said Monday, raising the probability of a European Union export ban on German pigs.

46.   Swine fever is a highly contagious and usually fatal disease affecting hogs.

47.   Swine fever is a highly contagious disease affecting hogs which is usually fatal.

48.   Swine fever is a highly contagious, usually fatal disease affecting hogs.

49.   Swine fever is a highly-contagious, usually fatal, disease affecting hogs.

50.   Swine fever is often fatal for pigs but does not affect other animals or humans.