The infant mortality rate in the United States, one of the highest in the Western world, continued to decline in the mid-1980s, the Centers for Disease Control reported. The federal health agency added, however, that the infant death rate, compounded by teenage pregnancies, was not declining as quickly as it did in the early to mid-1970s, a development it said was ominous for the future. During 1984, 10.8 of every 1,000 American babies died before their first birthdays. In 1985 the rate dropped to 10.6.