A “loopless” subdomain of transferrin binding protein B can elicit a broadly cross-reactive humoral immune response targeting variants from both encapsulated and non-typeable Haemophilus influenzae
Haemophilus influenzae is a Gram-negative bacterium that causes pneumonia, otitis media, and invasive infections such as meningitis and bacteremia. A vaccine that confers protection against disease caused by H. influenzae serotype b is currently available and is highly effective, but infections caused by non-b serotype...