Vaccine
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Randomized Controlled Trial
Immune response to hepatitis B vaccine with high antigen content in non-responders after standard primary vaccination in Chinese adults.
Alternative schedules are needed to provide greater immunogenicity in adults who fail to respond to the standard hepatitis B (HB) vaccine regimen. ⋯ Booster vaccination with a three-dose schedule of a high antigen content HB vaccine formulation was immunogenic and well tolerated in healthy adults. Clinicaltrialsgov Identifier: NCT01203319.
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Randomized Controlled Trial
Booster immune response in children 6-7 years of age, randomly assigned to four groups with two MMR vaccines applied by aerosol or by injection.
Aerosol immunization may be a useful tool to reach and sustain the elimination of measles, rubella, and congenital rubella syndrome. We compared booster seroresponses to aerosolized or injected MMR vaccines containing different strains of measles (Attenuvax or Edmonston-Zagreb) and mumps (Jeryl-Lynn or Leningrad-Zagreb). ⋯ CMN 2010-005 (National Regulatory Authority).
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As exemptions to school-entry requirements rise, vaccination rates in Arizona school children are approaching levels that may threaten public health. Understanding the interactions physicians have with vaccine-hesitant parents, as well as the opinions physicians hold regarding vaccination, exemption, and exemption policies, are critical to our understanding of, and ability to affect, vaccination exemption rates among children. ⋯ Vaccination providers in Arizona are generally very supportive of childhood immunizations but have varying comfort with exemption from individual vaccines. Responding providers tended to not support a requirement for a physician's signature for vaccine exemptions due to varying concerns regarding the implementation of such a practice.
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In Quebec, Canada, receipt of the 2009 AS03-adjuvanted pandemic H1N1 vaccine was associated with increased risk of anaphylaxis and other allergic-like events (ALE), especially among women of childbearing age. In response to this safety signal, a case-control study was conducted to identify potential risk factors. ⋯ Increased anaphylaxis and other allergic-like events observed in association with AS03-adjuvanted pandemic H1N1 vaccine remain mostly unexplained despite extensive risk factor review. However, prior to mass vaccination with similar formulations this safety signal warrants further consideration and better understanding. In particular, the predominance among women of childbearing age may be a clue to underlying biological or hormonal influences on adverse immunological responses to vaccine.
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Multicenter Study
Effectiveness of the monovalent rotavirus vaccine in Colombia: a case-control study.
To assess the effectiveness of the monovalent rotavirus vaccine (RV1) to prevent rotavirus diarrhea admissions to emergency departments (ED) in Colombia. ⋯ RV1 provided significant protection against rotavirus hospitalization among children under 1 year of age in the Colombian setting. The observation of lower effectiveness in children >12 months requires further assessment.