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Do high levels of C-reactive protein in Tanzanian children indicate malaria morbidity
1Ifakara Centre, Tanzania.
Insights
C-reactive protein (CRP) levels indicate malaria severity in Tanzanian children. Higher CRP in infants suggests significant malaria burden, while older children develop tolerance, showing lower CRP with parasitemia.
Area of Science:
- Pediatrics
- Infectious Diseases
- Immunology
Background:
- Malaria remains a major health concern in endemic regions like Tanzania.
- Understanding the acute-phase response, such as C-reactive protein (CRP), is crucial for assessing childhood illness.
- Previous studies have not fully elucidated the relationship between CRP and malaria in young children in highly endemic areas.
Purpose of the Study:
- To determine the relationship between C-reactive protein (CRP) levels and malaria in children under six years old in a highly endemic Tanzanian area.
- To investigate the utility of serum CRP concentrations in quantifying malaria-related morbidity in children.
- To explore age-related differences in the acute-phase response to malaria.
Main Methods:
- A cross-sectional study involving 629 children under six years of age in a highly malaria-endemic region of Tanzania.
- Measurement of C-reactive protein (CRP) levels using finger-prick blood samples.
- Correlation analysis of CRP levels with Plasmodium falciparum parasitemia and parental-reported recent illness.
Main Results:
- The median CRP level was 6.0 mg/liter, significantly higher than in European children.
- CRP concentration correlated with recent parental-reported illness.
- High CRP levels were strongly associated with Plasmodium falciparum parasitemia in children under one year of age.
- Older children showed lower CRP levels associated with parasitemia, indicating developing tolerance.
- Malaria-attributable CRP levels appeared to reflect the acquisition of parasitological and clinical tolerance.
Conclusions:
- Serum CRP levels can serve as a useful indicator for assessing the overall burden of morbidity, particularly in infants, in malaria-endemic settings.
- CRP measurement provides an objective marker for malaria-specific morbidity, especially when correlated with parasite densities.
- This approach offers an efficient method for estimating malaria morbidity risks through serological surveys.
Abstract:
Children under 6 years of age living in an area of Tanzania highly endemic for malaria were tested for C-reactive protein (CRP) in order to determine how the acute-phase response is related to malaria in children of different ages and to investigate whether serum CRP concentrations might be useful in the qualification of morbidity in such children. The median CRP level in the 629 finger-prick blood samples measured, 6.0 mg/liter, was much higher than that reported in the blood of children in Europe. The CRP concentration was correlated with recent illness reported by the parents. High CRP levels were most strongly associated with Plasmodium falciparum parasitemia in children under 1 year of age. In older children, lower levels of CRP were associated with parasitemia, and fewer children had increased CRP levels attributable to parasitemia. The levels of malaria-attributable CRP appear to track the acquisition of parasitological and clinical tolerance in this area with very high levels of P. falciparum transmission. Determination of CRP levels should be useful in the rapid assessment of the overall burden of morbidity, especially in infants. In areas where malaria is endemic, CRP associated with increased parasite densities provides an objective measure of malaria-specific morbidity. This would be an efficient approach to estimating malaria morbidity risks from small-scale serological surveys.
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