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Published on: May 1, 2021
Etiology and Outcomes of Acute Infectious Conjunctivitis in Children
Holly M Frost1, Timothy C Jenkins2, Jennifer C Meece3
1Center for Health Systems Research, Denver Health and Hospital Authority, Denver, CO; Department of Pediatrics, Denver Health and Hospital Authority, Denver, CO; Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO.
Insights
Haemophilus influenzae is the only bacteria significantly linked to childhood conjunctivitis. Most cases resolve within five days, but antibiotic side effects are common, highlighting the need for careful prescribing.
Area of Science:
- Ophthalmology
- Pediatrics
- Infectious Diseases
Background:
- Conjunctivitis is a common childhood illness with various causes.
- Understanding pathogen-specific presentations and outcomes is crucial for effective treatment.
Purpose of the Study:
- To identify the causative agents of conjunctivitis in children.
- To determine if clinical features and recovery rates vary by pathogen.
Main Methods:
- A multicenter case-control study involving 390 children (194 cases, 196 controls).
- Conjunctival samples analyzed for bacterial and viral pathogens using polymerase chain reaction (PCR).
- Caregiver surveys collected data on symptoms, antibiotic use, school absence, and adverse events.
Main Results:
- Haemophilus influenzae was the only pathogen significantly associated with conjunctivitis (aOR 4.59).
- Purulent discharge was more common in H. influenzae cases (aOR 2.47).
- Most children (96%) improved by day 5, irrespective of antibiotic use; however, 20% of those on topical antibiotics reported adverse events.
Conclusions:
- H. influenzae is a key bacterial cause of conjunctivitis in children.
- Clinical presentation and resolution by day 5 were similar across detected pathogens.
- Judicious antibiotic prescribing is essential due to reported adverse events in 20% of treated children.
Objective:
To determine the causes of conjunctivitis and whether clinical presentations and outcomes differ by pathogen.
Study Design:
This multicenter, case-control study enrolled 390 children (194 cases, 196 controls) whose conjunctival samples were tested for bacterial and viral pathogens. Caregivers completed surveys tracking symptoms, antibiotic use, school attendance, and adverse events. The outcomes analyzed included the prevalence of microorganisms detected by polymerase chain reaction in cases vs controls, symptoms, rate of resolution by day 5, school/childcare attendance, and parent-reported antibiotic-related adverse incidents.
Results:
Most cases (148, 76%) and controls (112, 57%) had bacteria identified, although only detection of Haemophilus influenzae was associated with conjunctivitis (aOR 4.59, 95% CI 2.86, 7.37). Purulent discharge was associated with H influenzae (aOR 2.47, 95% CI 1.23, 5.01) and occurred in 92 (77%) cases in which H influenzae was detected and 39 (53%) in which H influenzae was not detected. Improvement (186, 96%) and resolution (166, 86%) were observed by day 5 for most children and did not differ on the basis of ophthalmic antibiotic use. Caregivers reported antibiotic-associated adverse events for 21 (20%) children, with 8 (8%) requiring a medical visit.
Conclusions:
Only H influenzae was significantly associated with conjunctivitis. Symptoms did not differ in children with or without bacteria detected by polymerase chain reaction. Independent of antibiotic use, most children experienced resolution by day 5, but parents reported adverse events in 20% of children treated with topical antibiotics, underscoring the importance of judicious prescribing.
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