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.
Vaccination against Hib disease is included on the U.S. childhood immunization schedule. Either three or four doses are recommended depending on which Hib vaccine is being used. For all Hib vaccines, however, the first dose is recommended at two months of age, and is not generally recommended beyond five years of age.accination against Hib disease is included on the U.S. childhood immunization schedule. Either three or four doses are recommended depending on which Hib vaccine is being used. For all Hib vaccines, however, the first dose is recommended at two months of age, and is not generally recommended beyond five years of age.