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Influenza is a major cause of morbidity and mortality. Vaccination remains the most important means of preventing and controlling influenza. A review of the published literature shows that vaccination of children, healthy younger adults, the elderly, and both children and adults with high-risk medical conditions provides substantial benefits, although the types of benefits vary by age. Vaccination...
Alternatives to vaccination for preventing the considerable morbidity of otitis media (OM) are limited. Non-typable Haemophilus influenzae (NTHi) and Streptococcus pneumoniae together account for approximately 80% of OM cases worldwide, so vaccines against these most serious pathogens should materially reduce the burden of OM. Early trial data for a vaccine prototype including NTHi and 11 pneumococcal...
Vaccine effectiveness (VE) was determined with a case-cohort approach using Cox regression. Cases with confirmed systemic Hib infections in children born from 1 August 2000 to 31 December 2004 were ascertained through two independent nationwide active surveillance systems. A representative cohort of 1303 children born in the same time frame was randomly sampled in a nationwide immunisation survey...
Most African countries do not initiate hepatitis B vaccination at birth. We conducted a non-randomized controlled trial comparing hepatitis B vaccination given at age 0, 6, and 14 weeks versus the current Côte d’Ivoire schedule of 6, 10, and 14 weeks. Pregnant women were enrolled at four health centers in Abidjan. At age 9 months, 0.5% of infants in both the birth and 6-week cohorts were positive...
Following implementation of a routine childhood two-dose measles–mumps–rubella vaccination strategy, mumps disease levels dropped dramatically in the US and an elimination goal was set for 2010. However, a 2006 epidemic involved >5700 cases nationwide, with many reported among fully vaccinated college students.In an outbreak in two Iowa colleges, we investigated: (1) vaccination coverage using...
Selection bias is of critical concern in the study of influenza vaccine effectiveness when using an observational study design. This bias is attributable to the inherently different characteristics between vaccinees and non-vaccinees. The differences, which are related both to vaccination and signs of clinical disease as an outcome, may lead to erroneous estimation of the effectiveness. In this report,...
The WHO European Region has a measles elimination target for 2010. Between September 2005 and mid-June 2006, more than 50,000 measles cases were reported in Ukraine; many reportedly had received two doses of measles vaccine and over 60% were among persons 15–29 years old. To investigate vaccine effectiveness (VE), a case–control study was undertaken in Dnepropetrovsk region. VE for two doses of measles...
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