Background:
Accurate etiologic diagnosis of meningitis in developing countries is needed to improve clinical care and optimize disease prevention strategies. Cerebrospinal fluid (CSF) culture and latex agglutination are the current standard diagnostic methods but lack sensitivity.

/pdf/enhanced-diagnosis-of-pneumococcal-meningitis-with-use-of-3z470pp0mz.pdf

Enhanced diagnosis of pneumococcal meningitis with use of the Binax NOW immunochromatographic test of Streptococcus pneumoniae antigen: a multisite study.

https://ecommons.aku.edu/cgi/viewcontent.cgi?article=1055&context=pakistan_fhs_mc_women_childhealth_wc

Pediatric disease burden and vaccination recommendations: understanding local differences.

During September 2006-December 2009, we conducted active population and sentinel laboratory-based surveillance for bacterial meningitis pathogens, including Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae type b, in 4 China prefectures. We identified 7,876 acute meningitis and encephalitis syndrome cases, including 6,388 among prefecture residents. A total of 833 resident cases from sentinel hospitals met the World Health Organization case definition for probable bacterial meningitis; 339 of these cases were among children <5 years of age. Laboratory testing confirmed bacterial meningitis in 74 of 3,391 tested cases. The estimated annual incidence (per 100,000 population) of probable bacterial meningitis ranged from 1.84 to 2.93 for the entire population and from 6.95 to 22.30 for children <5 years old. Active surveillance with laboratory confirmation has provided a population-based estimate of the number of probable bacterial meningitis cases in China, but more complete laboratory testing is needed to better define the epidemiology of the disease in this country.

/pdf/population-based-surveillance-for-bacterial-meningitis-in-3ubu7fcbl7.pdf

Population-based surveillance for bacterial meningitis in China, September 2006-December 2009.

We conducted a prospective cross-sectional epidemiologic study of conjunctivitis-otitis syndrome during two 3-week periods of consecutive winters. A representative sample of 184 pediatricians and ear, nose and throat specialists in the Paris area recruited 2901 children from 6 to 36 months of age presenting with acute otitis media, of whom 465 (16%) also had purulent conjunctivitis. In sampled children, the culture of the conjunctival exudate yielded bacterial pathogens in 419 patients: Haemophilus influenzae, 371 (89%); Streptococcus pneumoniae, 72 (17%); and Branhamella catarrhalis, 23 (5%). Pulsed field gel electrophoresis analysis of paired H. influenzae isolates from the conjunctival exudate and middle ear fluid of 21 patients showed identical strains in each patient.

Epidemiologic study of conjunctivitis-otitis syndrome.

Haemophilus influenzae serotype b (Hib) was previously the most common cause of bacterial meningitis and an important etiologic agent of pneumonia in children aged <5 years. Its major virulence factor is the polyribosyl ribitol phosphate (PRP) polysaccharide capsule. In the 1980s, PRP-protein conjugate Hib vaccines were developed and are now included in almost all national immunization programs, achieving a sustained decline in invasive Hib infections. However, invasive Hib disease has not yet been eliminated in countries with low vaccine coverage, and sporadic outbreaks of Hib infection still occur occasionally in countries with high vaccine coverage. Over the past 2 decades, other capsulated serotypes have been recognized increasingly as causing invasive infections. H. influenzae serotype a (Hia) is now a major cause of invasive infection in Indigenous communities of North America, prompting a possible requirement for an Hia conjugate vaccine. H. influenzae serotypes e and f are now more common than serotype b in Europe. Significant year-to-year increases in nontypeable H. influenzae invasive infections have occurred in many regions of the world. Invasive H. influenzae infections are now seen predominantly in patients at the extremes of life and those with underlying comorbidities. This review provides a comprehensive and critical overview of the current global epidemiology of invasive H. influenzae infections in different geographic regions of the world. It discusses those now at risk of invasive Hib disease, describes the emergence of other severe invasive H. influenzae infections, and emphasizes the importance of long-term, comprehensive, clinical and microbiologic surveillance to monitor a vaccine's impact.

/pdf/invasive-haemophilus-influenzae-infections-after-3-decades-4joai6x370.pdf

Invasive Haemophilus influenzae Infections after 3 Decades of Hib Protein Conjugate Vaccine Use.

Prospective population-based incidence of Haemophilus influenzae type b meningitis in Thailand.

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Prospective population-based incidence of Haemophilus influenzae type b meningitis in Thailand.