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.
The guidelines recognized the potential superiority of the 7 valent, conjugated pneumococcal vaccine but had no current recommendation for its use. The Hib and meningococcus C conjugate vaccines should be given at least 2 weeks before or 2 weeks post splenectomy, but there is currently no indication for revaccination.