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[2011 news in infections diseases: selected readings]
1Département de médecine, EHC--Hôpital de Morges, 1011 Morges. jean-daniel.baumgartner@ehc.vd.ch
Abstract:
A study published in 1998 linking MMR vaccine and autism was recently retracted by the Lancet because the data were falsified. The impressive reduction of invasive pneumococcal diseases with the 7-valent pneumococcal conjugate vaccine is due to a more than 90% reduction in rates of infections due to vaccinal serotypes at the expense of a slight increase in non-vaccinal serotypes. Genes encoding resistance factors to several antibiotic classes were detected in 30000-year-old samples. New Delhi metallo-beta-lactamase 1 was frequently detected in street water in New Dehli. Azithromycin decreased COPD exacerbations in a select group of patients with COPD at the cost of more frequent small decrements in hearing. Cranberry juice did not prevent recurrent urinary tract infections. Some patients with persistent symptoms after Lyme disease had higher levels of anti-Borrelia antibodies than cured patients.
Insights
The 1998 MMR vaccine and autism study was retracted due to falsified data. Pneumococcal vaccines significantly reduce infections, though some non-vaccine serotypes may increase.
Area of Science:
- Vaccinology
- Microbiology
- Infectious Diseases
Context:
- Retraction of a fraudulent 1998 study linking MMR vaccine to autism.
- Efficacy of 7-valent pneumococcal conjugate vaccine (PCV7) in reducing invasive pneumococcal diseases.
- Detection of antibiotic resistance genes in ancient DNA and modern environmental samples.
- Prevalence of New Delhi metallo-beta-lactamase 1 (NDM-1) in environmental water sources.
- Clinical effects of azithromycin in patients with chronic obstructive pulmonary disease (COPD).
- Efficacy of cranberry juice in preventing recurrent urinary tract infections (UTIs).
- Immunological markers in patients with persistent symptoms after Lyme disease.
Purpose:
- To highlight the retraction of a fraudulent study and its implications for vaccine safety.
- To evaluate the impact of PCV7 on specific serotypes and overall invasive pneumococcal disease rates.
- To investigate the historical and environmental presence of antibiotic resistance genes.
- To assess the public health risk posed by NDM-1 in water supplies.
- To determine the benefits and risks of azithromycin treatment for COPD exacerbations.
- To examine the role of cranberry juice in UTI prevention.
- To explore the association between anti-Borrelia antibodies and persistent Lyme disease symptoms.
Summary:
- A 1998 study linking the measles, mumps, and rubella (MMR) vaccine to autism was retracted due to data falsification.
- The 7-valent pneumococcal conjugate vaccine (PCV7) has impressively reduced invasive pneumococcal diseases by over 90% for vaccinal serotypes, with a minor increase in non-vaccinal serotypes.
- Antibiotic resistance genes were found in 30,000-year-old samples, and New Delhi metallo-beta-lactamase 1 (NDM-1) is prevalent in New Delhi street water.
- Azithromycin reduced COPD exacerbations in a specific patient group but caused minor hearing decrements.
- Cranberry juice showed no preventive effect on recurrent UTIs.
- Patients with persistent symptoms post-Lyme disease exhibited higher anti-Borrelia antibody levels compared to cured patients.
Impact:
- Underscores the importance of scientific integrity and the retraction of fraudulent research.
- Demonstrates the significant public health benefit of conjugate pneumococcal vaccines.
- Highlights the ancient origins and environmental dissemination of antibiotic resistance.
- Raises concerns about NDM-1 as a potential public health threat.
- Provides evidence for a specific benefit-risk profile of azithromycin in COPD management.
- Suggests cranberry juice is not effective for UTI prevention.
- Indicates a potential role for persistent immune responses in post-Lyme disease symptoms.
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