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The immune function and measles virus infection in three different socioeconomic child populations in Karachi,
K Terao1, M Shahid, F Ochikubo
1Tsukuba Primate Center for Medical Science, National Institute of Health, Ibaragi.
Insights
Children in low-income groups had higher immunoglobulin and measles antibody levels, suggesting socioeconomic factors impact immune response to measles virus. Higher-income children showed lower IgM and more measles antibody-negative cases.
Area of Science:
- Immunology
- Pediatrics
- Public Health
Background:
- Socioeconomic status significantly impacts child health and immune responses.
- Measles virus infection and its sequelae, like subacute sclerosing panencephalitis (SSPE), remain global health concerns.
- Understanding immune variations across socioeconomic strata is crucial for targeted health interventions.
Purpose of the Study:
- To investigate immune function and anti-measles virus antibody levels in children from different socioeconomic groups in Karachi.
- To explore the correlation between socioeconomic status, living conditions, and immune markers.
- To assess the potential link between environmental factors and measles virus susceptibility.
Main Methods:
- Comparative analysis of immune function and antibody levels in 111 children stratified into high-, middle-, and low-income groups.
- Assessment of blood cell counts and biochemical data to evaluate general health status.
- Measurement of immunoglobulin (IgG, IgA, IgM) and anti-measles virus antibody levels.
Main Results:
- No significant differences in general health indicators (blood counts, biochemical data) across income groups.
- Low-income children exhibited significantly higher levels of IgG, IgA, and anti-measles virus antibodies.
- High-income children showed lower IgM levels and a higher incidence of anti-measles virus antibody negativity, particularly in those over four years old.
Conclusions:
- Living environmental and hygienic conditions significantly influence exposure to infectious pathogens like measles virus.
- Socioeconomic disparities correlate with distinct immune profiles and measles virus antibody status in children.
- Further research is warranted to explore the relationship between living environment and SSPE risk in specific populations.
Abstract:
The immune function as well as anti-measles virus antibody level were investigated with 111 children in Karachi who were classified into high-, middle- and low-income groups. No difference in the blood cell counts or the biochemical data among three groups indicates no marked difference in the general health conditions among them. In the low-income group, levels of IgG, IgA and anti-measles virus antibody were significantly higher than those in the other two groups. Although 30% of children of the low-income group kept extremely high levels of immunoglobulin, no significant correlation was observed between IgG levels and anti-measles virus antibody levels. In the high-income group, the level of IgM was significantly lower and the incidence of anti-measles virus antibody-negative children was high (7/38; 18.4%). These antibody-negative children kept lower immunoglobulin levels although they were over four years old. These results suggest that the living environmental conditions of these different socioeconomic groups vary greatly and hygienic conditions must influence the chance of encountering infectious pathogens including measles virus. The relation between living environment and risk of subacute sclerosing panencephalitis (SSPE) in child population of Krachi is discussed.