Where was the first vaccine for meningococcal group B introduced?

A vaccine against a strain of meningococcal group B disease was introduced in New Zealand during an outbreak that began in the 1990s. The country used a tailored vaccine known as MeNZB, designed specifically for its epidemic strain. It was part of one of the most closely watched targeted vaccine campaigns in modern public health. Later, broader MenB vaccines were developed for use in other countries. Meningococcal disease can progress very quickly, making prevention especially important.