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Epidemiology and predictors of infant morbidity in rural Malawi
M Vaahtera1, T Kulmala, K Maleta
1Medical School, University of Tampere, Finland. merimaaria.vaahtera@kolumbus.fi
Insights
Infant morbidity from diarrhea, respiratory infections, and malaria in rural Malawi is influenced by environmental and social factors. High case fatality rates are linked to delayed or inappropriate healthcare-seeking behaviors, highlighting the need for early interventions.
Area of Science:
- Pediatrics
- Epidemiology
- Global Health
Background:
- Infant morbidity and mortality remain significant challenges in low-income settings.
- Understanding the epidemiology and health-seeking behaviors for common childhood illnesses is crucial for effective interventions.
Purpose of the Study:
- To describe the epidemiology and health-seeking behaviors associated with acute diarrhea, respiratory infections (ARI), and malaria in infants in rural Malawi.
- To identify factors influencing infant morbidity and case fatality rates.
Main Methods:
- A prospective cohort study involving monthly home visits to 703 newborns for one year.
- Multivariate analysis using polychotomous logistic regression to assess associations between morbidity and various factors.
- Analysis of health-seeking behaviors, including consultations with traditional healers and medical professionals.
Main Results:
- Infants experienced an average of 1.3 annual episodes of diarrhea, 1.1 of ARI, and 0.7 of malaria.
- Morbidity was associated with residence, early life weight, number of siblings, father's marital status, and water source.
- Diarrhea and malaria peaked in rainy months (6-12 months), while ARI peaked in the cold season (1-3 months).
- Case fatality rates were 1% for diarrhea, 2% for ARI, and 4% for malaria.
- 37% of illnesses were managed at home without advice; traditional healers were consulted earlier than medical professionals.
- Use of traditional healers was higher in families where infants died.
Conclusions:
- Seasonality, living conditions, and care practices significantly impact infant morbidity in rural Malawi.
- High case fatality rates underscore the critical link between health-seeking behavior and infant survival.
- Interventions should focus on promoting early and appropriate management of common childhood illnesses in infancy.
Abstract:
In rural Malawi, 703 newborns were visited monthly for 1 year to describe the epidemiology and health-seeking behaviour during acute episodes of diarrhoea, respiratory infections (ARI) and malaria. On average, the infants suffered from 1.3 annual episodes (11.0 illness days) of diarrhoea, 1.1 episodes (9.4 days) of ARI and 0.7 episodes (4.8 days) of malaria. Multivariate analysis with polychotomous logistic regression indicated that the amount of morbidity was associated with the child's area of residence, weight in early life, number of siblings, father's marital status and the source of drinking water. Diarrhoea and malaria were most common at 6-12 months of age and during the rainy months whereas respiratory infections peaked at 1-3 months of age and in the cold season. Ten per cent of diarrhoea, 9% of ARI and 7% of malaria episodes lasted for more than 14 days. Fifty-eight infants died, giving case fatality rates of 1% for diarrhoea, 2% for ARI and 4% for malaria. One-third (37%) of the illness episodes were managed at home without external advice. A traditional healer was consulted in 16% of episodes and a medical professional in 55% of episodes. If consulted, traditional healers were seen earlier than medical professionals (median duration after the onset of symptoms 0.7 vs. 1.8 days, P < 0.001). Traditional healers were significantly more commonly used by those families whose infants died than by those whose infants did not die (odds ratio 1.8, 95% CI 1.1, 3.0). Our results emphasise the influence of seasonality, care and living conditions on the morbidity of infants in rural Malawi. Case fatality for diarrhoea, ARI and malaria was high and associated with health-seeking behaviour among the guardians. Future interventions must aim at early and appropriate management of common childhood illnesses during infancy.