Figure 3From: Prevalence and antimicrobial resistance pattern of bacterial meningitis in EgyptPercentage of Meningitis Cases Caused by Haemophilus influenzae. Eight different studies were conducted on patients diagnosed with meningitis caused by H. influenzae from 1965-2004. ES1966-1989 reported H. influenzae to be the cause of meningitis in 4.1% of 7,809 patients [3]. In ES1966-1968 H. influenzae was responsible for 12% of 123 culture-positive cases [6]. ES1971-1975 study of 1,333 patients with ABM reported only 2.6% of meningitis cases were due to infection with H. influenzae [13]. ES1977-1978 H. influenzae was reported to be responsible for 2.6% of the total 1627 CSF specimens and 12% of the 350 culture-positive isolates [10]. ES1998-2000 on children less than 6 years, 39% of the 228 patients' cultured- confirmed disease 39% showed H. influenzae [4]. ES2000 revealed that H. influenzae was responsible for 14.3% of 223 positive bacterial culture meningitis cases [1]. ES2002-2003 on 310 children clinically diagnosed with meningitis identified 202 cases as ABM where 21% of the ABM cases were caused by H. influenzae [21]. ES1998-2004 H. influenzae was responsible for 20% of the 843 cases of culture-positive patients [2]. The asterisks represent epidemiological studies reporting an average during the entire period of the study.Back to article page