Related Experiment Video
Updated: Aug 14, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
Vernal keratoconjunctivitis and intestinal parasitic infestations in black children
1Department of Ophthalmology, University College Hospital, Ibadan, Nigeria. ayotundeajaiyeoba@yahoo.co.uk
Insights
Vernal keratoconjunctivitis (VKC) in Nigerian children showed a link to intestinal worm infections. While not an independent risk factor, deworming might benefit children with VKC, warranting further research.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Pediatrics
Background:
- Vernal keratoconjunctivitis (VKC) is a common allergic eye condition in children.
- Intestinal parasitic infections are prevalent in many tropical and subtropical regions.
Purpose of the Study:
- To investigate the association between vernal keratoconjunctivitis (VKC) and intestinal worm infestations in black children in Nigeria.
- To determine if parasitic infections are a risk factor for VKC.
Main Methods:
- A case-control study was conducted with 117 VKC cases and 198 controls in Ibadan, Nigeria.
- Participants were assessed for parasitic infestations, including roundworm, hookworm, and protozoa.
- Statistical analysis, including odds ratios, was used to evaluate the association.
Main Results:
- Children with VKC had a higher prevalence of parasitic infestations (50.5%) compared to controls (36.8%).
- The odds ratio for VKC in children with worm infestations was 1.68.
- Roundworm infestation was the most common type, but neither it nor older age were independent risk factors for VKC.
Conclusions:
- A significant association exists between intestinal worm infestations and VKC in Nigerian children.
- Deworming interventions may potentially benefit children suffering from VKC.
- Further research with robust study designs is recommended to confirm these findings and guide treatment strategies.
Abstract:
The study aimed at finding out any association between vernal keratoconjunctivitis (VKC) and intestinal worm infestations in black children in Nigeria. This is a report of a case-control study of a total of 117 cases of VKC and 198 controls, who were newly presenting to two hospitals in Ibadan. The controls were comparable to the cases in many respects. While 67 (57%) of cases admitted to previous passage of worms, 59 (50.5%) children actually had parasitic infestations. Of these 59 children, 30 (51%) were due to roundworm, 12 (20%) to hookworm, 14 (24%) to protozoal infestation and others, e.g., tapeworms, 13 (5%). Among controls, 36.8% had parasitic infestation, out of which roundworms were responsible for 11.6%, hookworms 7.6%, protozoa 14.1% and others 3.5%. Children with VKC have almost twice (odds ratio = 1.68) the risk of having been infested by worms. Both older age in children and roundworm infestation were not independent risk factors for VKC. There was no significant association among all ages, sex, hookworm and other worms with VKC. Deworming may prove beneficial for children with VKC; however, more studies with appropriate design are required to prove this.
Related Concept Videos
Giardiasis
American Trypanosomiasis
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Fungal Phylum Microsporidia
Amebiasis
Leishmaniasis
