Sero-epidemiology and Risk Factor Analysis of Measles Among Children in Pakistan
Muhammad Hidayat Rasool1, Ahsan Rafiq1, Muhammad Zeeshan Nawaz1
1Department of Microbiology, Government College University,Faisalabad,Pakistan.
Insights
This study assessed measles immunity in Pakistani children using indirect haemagglutination assay (IHA). Vaccinated children showed significantly higher antibody titers, indicating a robust humoral immune response to measles vaccination.
Area of Science:
- Immunology
- Public Health
- Pediatrics
Background:
- Measles remains a significant public health concern globally.
- Assessing humoral immunity is crucial for evaluating vaccine effectiveness and infection exposure.
- Understanding immune responses in children informs vaccination strategies.
Purpose of the Study:
- To evaluate humoral immunity against measles in children aged 1-10 years in Punjab, Pakistan.
- To standardize and utilize the indirect haemagglutination assay (IHA) for serodiagnosis.
- To analyze risk factors associated with measles immunity, including vaccination status.
Main Methods:
- A comparative cross-sectional study involving 231 children (1-10 years) in Punjab, Pakistan.
- Blood samples were collected using a convenient sampling method.
- Indirect haemagglutination assay (IHA) was performed for serodiagnosis and immune evaluation.
Main Results:
- The geometric mean titre (GMT) in vaccinated children was significantly higher (p < 0.001) than in unvaccinated children.
- IHA titers in vaccinated individuals reflected a strong humoral immune response.
- In unvaccinated individuals, IHA titers indicated exposure to measles infection.
Conclusions:
- The indirect haemagglutination assay (IHA) effectively measures humoral immunity against measles in children.
- Measles vaccination significantly enhances antibody titers, demonstrating vaccine efficacy.
- The study highlights the importance of vaccination status in determining measles immunity levels.
Abstract:
Comparative cross sectional study was conducted on blood samples (n = 231) collected from children of 1 to 10 years of age in Punjab Pakistan through convenient sampling method. Indirect haemagglutination assay (IHA) was standardized and used for serodiagnosis and evaluation of humoral immunity against measles. Associated risk factors including age, gender, locale, and vaccination status were analyzed. Geometric mean titre (GMT) of vaccinated individuals was significantly higher (p < 0.001) than that of non-vaccinated individuals showing that IHA titre of vaccinated individuals was a measure of humoral immune response; whereas, in case of non-vaccinated individuals an indicative of exposure to the measles infection.
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