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Published on: August 22, 2012
[Clinical and epidemiological study of pediculosis capitis in schoolchildren from Coro, Venezuela]
Dalmiro Cazorla1, Aixa Ruiz, María Acosta
1Laboratorio de Entomología, Parasitología y Medicina Tropical, Centro de Investigaciones Biomédicas, Universidad Nacional Experimental Francisco de Miranda, Coro, Venezuela. Lutzomyia@hotmail.com
Insights
Head lice (Pediculus capitis) infestation is common in Venezuelan schoolchildren, affecting 28.8% of those surveyed. Girls and children with longer hair were more frequently infested, with overcrowding and poor hygiene being significant risk factors.
Area of Science:
- Medical Entomology
- Public Health
- Epidemiology
Context:
- Pediculus capitis (head lice) infestation poses a significant public health challenge globally, particularly in school-aged populations.
- Understanding the prevalence and associated risk factors is crucial for effective control strategies.
Purpose:
- To investigate the clinical and epidemiological characteristics of Pediculus capitis infestation among primary school children in an urban area of Venezuela.
- To identify factors associated with the transmission and maintenance of head lice in this population.
Summary:
- A cross-sectional survey of 327 primary school children in Coro city, Venezuela, revealed an overall prevalence of 28.8% for Pediculus capitis infestation.
- Infestation rates were significantly higher in girls and children with longer hair. Clinical findings included pruritus and cervical lymphadenopathy.
- Lower socioeconomic status, overcrowding, sharing personal items, living with infested individuals, and previous infestation were significant risk factors.
Impact:
- This study highlights key epidemiological factors contributing to head lice prevalence in a vulnerable population.
- Findings can inform targeted public health interventions and educational programs to reduce head lice transmission in schools and communities.
- The data underscores the importance of addressing socioeconomic and environmental factors in pediculosis control.
Abstract:
Between March-July 2003, a cross-sectional survey was conducted to investigate clinical and epidemiological data on Pediculus capitis infestation among 327 (175 males and 152 females) primary school age children of an urban sector of Coro city, from the semiarid region of Falcon state, north-western Venezuela. Children were evaluated ectoparasitologically by visual inspections of heads. Overall prevalence was 28.8% (94/327). Pediculosis capitis infestation rates were significantly higher in girls (84.0 vs. 15. 9%) [Odds Ratio (OR) = 11.4; p = 0.0001] and schoolchildren with hair length > 3 cm (OR = 11.0; p = 0.0001), nevertheless these were not significantly different among age groups, races, colour and type of hair (P > 0.05). Among the clinical findings, only head pruritus (18 vs 9.5%), especially at night (19.2% cases), and lymphadenopathy (7.3 vs. 5.5%) mostly located at the cervical region (14.9%), showed significantly higher percentages in infested children than in uninfested ones. Of interest was that lower socioeconomic levels (OR = 2.4; p = 0.02), high levels of overcrowding conditions (> or = 2 persons/bed: OR, 18.4; p = 0. 00001), sharing of combs and brushes (OR = 3.8; p = 0.0001), living with infested people (OR = 2.8; p = 0.0001), and showing previous infestation (OR = 9.5; p = 0.0001), also appeared to be significant factors associated with transmission and maintenance of pediculosis capitis among school children.
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