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Influenza vaccination may provide a “back-boost” to antibodies against previously encountered strains. If the back-boost effect is common, this could allow more aggressive vaccine updates, as emerging variants would be expected to both elicit de-novo responses and boost pre-existing responses against recently circulating strains. Here we used the emergence of an antigenically novel A(H3N2) strain...
In the United States recording accurate vaccine lot numbers in immunization records is required by the National Childhood Vaccine Injury Act and is necessary for public health surveillance and implementation of vaccine product recalls. However, this information is often missing or inaccurate in records. The Food and Drug Administration (FDA) requires a linear barcode of the National Drug Code (NDC)...
Carriage of commensal bacteria species is associated with the development of natural immunity to meningococcal disease, with lipo-oligosaccharides (LOS) of meningococci being one of the main virulence factors associated with severity of meningococcal disease. Meningococcal reference strains and isolates from the commensal species Neisseria lactamica and Moraxella catarrhalis were assessed for the...
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