Hib

noun

ˈhib 

often attributive

: a serotype of haemophilus (Haemophilus influenzae type B) that causes bacterial meningitis and pneumonia especially in children

Hib disease

Hib vaccine

Examples of Hib in a Sentence

Recent Examples on the Web

Since then, the Department of Health has started the rulemaking process of repealing requirements for Hepatitis B, varicella (chicken pox), Haemophilus influenza type b (Hib) and pneumococcal conjugate vaccines for public school attendance. — Cbs Miami Team, CBS News, 28 Apr. 2026

The vaccines the state no longer plans to mandate are varicella (chickenpox), Hepatitis B, Haemophilus influenzae type b (Hib), and Pneumococcal conjugate (PCV15/20). — Cindy Krischer Goodman, The Orlando Sentinel, 16 Apr. 2026

New cases in unvaccinated kids feed concern that Hib may have a resurgence. — Eduardo Cuevas, USA Today, 4 Apr. 2026

The disease, commonly called Hib, is a bacterial infection that can sometimes cause problems that are easy to treat. — Elizabeth Robinson, NBC news, 2 Apr. 2026

Word History

Etymology

Hi- (from the species name Haemophilus influenzae) + type B

First Known Use

1984, in the meaning defined above

Medical Definition

Hib

noun

ˈhib, ˌā-ˌchī-ˈbē 

often attributive

: a serotype of a bacterium of the genus Haemophilus (H. influenzae type B) that causes bacterial meningitis and pneumonia especially in children

Hib disease

a Hib vaccine

see conjugate vaccine