| bacterial meningitis in the united states, 1986: report of a multistate surveillance study. the bacterial meningitis study group. | a prospective, laboratory-based surveillance project obtained accurate data on meningitis in a population of 34 million people during 1986. haemophilus influenzae was the most common cause of bacterial meningitis (45%), followed by streptococcus pneumoniae (18%), and neisseria meningitidis (14%). rates of h. influenzae meningitis varied significantly by region, from 1.9/100,000 in new jersey to 4.0/100,000 in washington state. the overall case fatality rates for meningitis were lower than those ... | 1990 | 2230261 |