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.
Haemophilus influenzae type b (Hib) was a common cause of meningitis in infants and young children until the Hib vaccine was introduced for infants. Vaccines are available for both Neisseria meningitidis and Streptococcus pneumoniae.They're recommended for all children and adults at special risk.iral meningitis is more common than the bacterial form and generally -- but not always -- less serious. It can be triggered by a number of viruses, including several that can cause diarrhea. People with viral meningitis are much less likely to have permanent brain damage after the infection resolves.