Publications by authors named "Bethlehem Shiberu"

The coronavirus disease 2019 (COVID-19) pandemic has highlighted the urgent need for effective prophylactic vaccination to prevent the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Intranasal vaccination is an attractive strategy to prevent COVID-19 as the nasal mucosa represents the first-line barrier to SARS-CoV-2 entry. The current intramuscular vaccines elicit systemic immunity but not necessarily high-level mucosal immunity.

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Article Synopsis
  • - The COVID-19 pandemic has highlighted the need for effective vaccinations to combat the spread of SARS-CoV-2, with a focus on intranasal vaccines as they target the nasal mucosa, the first barrier to infection.
  • - Current vaccines mainly provide systemic immunity via intramuscular injection, lacking the ability to activate mucosal defenses.
  • - The AdCOVID vaccine, an intranasal adenovirus-based vaccine, successfully induces strong immune responses, including mucosal IgA and T cells, making it a promising candidate for COVID-19 prevention.
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The genome of Helicobacter pylori 26695 has been sequenced and the lipopolysaccharide (LPS) O sidechain of this strain has been shown to express both Lewis x and Lewis y units. To determine the role of HP0159 and HP1416, genes recognized as rfaJ homologs and implicated in LPS synthesis, isogenic mutants of H. pylori 26695 were generated.

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