ArticleChina CDC weekly2021
Immunogenicity of 23-Valent Pneumococcal Polysaccharide Vaccine in Patients with Chronic Obstructive Pulmonary Disease - Hebei Province, China, September-December, 2019.
Article in China CDC weekly, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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14 authors at 3 institutions in 1 country.
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Abstract
WHAT IS ALREADY KNOWN ON THIS TOPIC?: The global burden of chronic obstructive pulmonary disease (COPD) is serious. Pneumococcal infection is associated with acute exacerbations of COPD (AECOPD). The 23-valent pneumococcal polysaccharide vaccine (PPSV23) is recommended for COPD patients to decrease AECOPD due to pneumococcus, but evidence on the immunogenicity of PPSV23 in COPD patients is limited. WHAT IS ADDED BY THIS REPORT?: This study showed good immunogenicity of one dose of PPSV23 in COPD patients. Antibody levels against all 23 vaccine serotypes were assessed before and four weeks after vaccination of COPD patients with one dose of PPSV23. The percent of COPD patients who had two-fold increases in pneumococcal antibody levels following vaccination ranged from 65.2% (serotype 3) to 94.4% (serotype 2). There were statistically significant differences in immunogenicity by serotype. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE?: This study supports current recommendations for PPSV23 vaccination of COPD patients in China to provide protection from pneumococcal diseases.
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