The name coupon arose because in the past, paper bond certificates were issued which had coupons attached to them, one for each interest payment. On the due dates the bondholder would hand in the coupon to a bank in exchange for the interest payment.
Hib vaccine. Haemophilus influenzae type B vaccine is a vaccine used to prevent Haemophilus influenzae type b (Hib) infection. In countries that include it as a routine vaccine, rates of severe Hib infections have decreased more than 90%. It has therefore resulted in a decrease in the rate of meningitis, pneumonia, and epiglottitis.
In this article. Despite its name, the bacterium called Haemophilus influenzae type b, or Hib, does not cause the flu. It does, however, cause Hib disease, a serious health threat to children, especially those under age 5.Fortunately, the Hib vaccine, available since 1992, provides safe and effective protection against that threat.n this article. Despite its name, the bacterium called Haemophilus influenzae type b, or Hib, does not cause the flu. It does, however, cause Hib disease, a serious health threat to children, especially those under age 5.