Abstract Haemophilus influenzae type b (Hib) was a major cause of bacterial pneumonia in children prior to the introduction of Hib-conjugate vaccines. The widespread use of Hib-conjugate vaccines has resulted in a significant decline in the number of cases of invasive Hib disease. including bacteraemic pneumonia. in areas where the vaccine has been implemented. https://mabelandfoxs.shop/product-category/milestone-cards/