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 disease, Haemophilus b) What is Haemophilus influenzae type b (Hib) disease? Haemophilus influenzae is a type of bacteria that is commonly found in the nose and throat of children and adults. A particular type, Haemophilus influenzae serotype b (Hib), can invade and cause serious infections. Hib may cause meningitis (inflammation of the coverings of the spinal column and brain), bloodstream infections, pneumonia, arthritis, and infections in other parts of the body. Despite its name, this disease has nothing to do with the influenza (flu) virus.