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Published on: August 7, 2017
Prospective epidemiologic study on respiratory diseases in children and immunization against measles
Wiesław Jedrychowski1, Umberto Maugeri, Iwona Jedrychowska-Bianchi
1Chair of Epidemiology and Preventive Medicine, Collegium Medicum, Jagiellonian University, Kraków, Poland. myjedryc@cyf-kr.edu.pl
Insights
Childhood measles vaccination may reduce allergy risk. This study found vaccinated children had lower rates of allergy, asthma, and respiratory infections compared to unvaccinated children.
Area of Science:
- Immunology
- Pediatrics
- Epidemiology
Background:
- Investigating the hypothesis that early childhood vaccination with live attenuated measles virus may prevent allergic sensitization.
- A 3-year follow-up study conducted in Kraków, Poland, involving 1005 school children.
Purpose of the Study:
- To explore the potential protective effect of measles vaccination against allergic sensitization and respiratory illnesses.
- To assess the relationship between measles vaccination status and the incidence of chronic respiratory symptoms, allergy, asthma, and acute respiratory infections.
Main Methods:
- Utilizing individual vaccination records from school nurses to determine immunization status.
- Collecting data on respiratory health endpoints including chronic respiratory symptoms, allergy, asthma, and susceptibility to acute respiratory infections.
- Comparing health outcomes between vaccinated and non-vaccinated children, with specific attention to those who contracted measles.
Main Results:
- Children vaccinated against measles who did not contract the disease exhibited the lowest rates of chronic respiratory symptoms.
- Vaccinated children showed approximately half the risk of physician-diagnosed allergy (OR = 0.58) and asthma (OR = 0.50) compared to unvaccinated children.
- Vaccination was also associated with a reduced risk of susceptibility to respiratory infections (OR = 0.51).
Conclusions:
- The findings provide indirect evidence that infection with attenuated measles virus can modulate immunological responses.
- Measles vaccination appears to alter immune reactions involved in the development of respiratory symptoms and allergic conditions.
- Early childhood measles vaccination may play a role in preventing or reducing the risk of allergy and asthma.
Background:
A hypothesis that vaccination with live attenuated measles virus performed in early childhood may prevent allergic sensitization has been explored in the course of a 3-year follow-up study in Kraków (Poland) among 1005 school children.
Materials And Methods:
The basic respiratory health end-points were chronic respiratory symptoms, allergy, asthma and susceptibility to acute respiratory infections. Information about immunization status of children was extracted from individual vaccination records kept by school nurses. The study showed the highest rates of chronic respiratory symptoms in non-vaccinated children who contracted measles while the lowest rates in those vaccinated who did not contract the disease.
Results And Conclusions:
Risk of allergy diagnosed by a physician in vaccinated children after adjustment to potential confounders was about half of that in the reference group (OR = 0.58 95% CI: 0.42-0.80), the same was found for asthma diagnosed by a physician (OR = 0.50 95% CI: 0.24-1.00), and for susceptibility to respiratory infections (OR = 0.51 95% CI: 0.36-0.72). Our data provide indirect evidence that infection with attenuated measles virus is able to alter immunological reactions being responsible for the manifestation of respiratory symptoms and allergy.
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