Tactical control of ovine Campylobacter abortion outbreaks with a bacterin

Abortions due to Campylobacter fetus fetus (C. fetus fetus) were diagnosed in three Canterbury ewe flocks 6 weeks prior to lambing. In two of the flocks, two inoculations of a C. fetus fetus bacterin, 10 days apart, reduced the incidence of abortions in the treated ewes to about one third and one half respectively of the level in the control ewes in the same flock. The treatment had no effect in a third flock where an outbreak had been in progress for 2 weeks before investigations started. The results confirm earlier Scottish work where pregnant sheep were inoculated with a C. fetus fetus vaccine following artificial challenge with C. fetus fetus. This inoculation significantly reduced the number of C. fetus fetus abortions. The results also indicate that treatment must start very early in an outbreak.     

Foreign direct investment in the United States and u.s. Interests

Foreign direct investment entered the United States at unprecedented rates during the second half of the 1980s. The result has been much higher levels of foreign ownership of U.S. economic activities than those to which the nation has been accustomed. The reasons for this investment include loss of competitiveness of U.S. firms compared to international rivals as well as attractions to foreign investors of the United States itself. The economic effects of greater levels of foreign ownership are generally positive, although some problems with levels of competition could ensue. National security considerations might cause the United States to place some restrictions on this investment, but other restrictions at the present time appear to be unwarranted.