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Bacillus Calmette-Guérin vaccine complications in Iranian children at a University Hospital
M R Bolursaz1, F Lotfian2, A A Velayati3
1Pediatric Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran.
Insights
Bacillus Calmette-Guérin (BCG) vaccine complications in children often present as local issues, but disseminated disease, particularly in those with primary immunodeficiency (PID), requires attention. Further research into improved BCG vaccines and vaccination strategies for PID is needed.
Area of Science:
- Pediatrics
- Immunology
- Vaccinology
Background:
- The Bacillus Calmette-Guérin (BCG) vaccine is the sole available vaccine, yet it can lead to various local and systemic adverse reactions.
- Understanding BCG complications is crucial for pediatric health and vaccine safety.
Purpose of the Study:
- To review the clinical features and treatment of Bacillus Calmette-Guérin (BCG) complications in pediatric patients.
- To identify patterns and risk factors associated with BCG vaccine adverse events.
Main Methods:
- A retrospective study enrolled children diagnosed with local or disseminated BCG complications.
- Data collection occurred at Masih Daneshvari Medical Center between March 2013 and September 2015.
- Clinical and laboratory findings were used for diagnosis.
Main Results:
- Out of 49 children, 71% had local complications and 29% had disseminated disease.
- Suppurative lymphadenitis was common (71% of local cases).
- Primary immunodeficiency (PID) was identified in 64% of disseminated cases. Treatment varied from conservative management to medical and surgical interventions.
Conclusions:
- Local BCG complications are more frequent in children, but disseminated disease, often linked to PID, is also a concern.
- Current vaccination programs may need adjustments for children with suspected PID.
- Development of improved BCG vaccines is recommended.
Background:
Although the BCG vaccine remains the only available vaccine, a number of complications from local to systemic adverse reactions can occur.
Objective:
The aim of the study was to review the clinical features and treatment of Bacillus Calmette-Guérin (BCG) complications in children.
Methods:
Children with clinical and laboratory findings compatible with a diagnosis of local complication and disseminated disease at Masih Daneshvari Medical Center were enrolled from March 2013 to September 2015.
Results:
Among 49 children with BCG complications, 35 (71%) had local complications and 14 (29%) had disseminated disease. The mean age at presentation was nine months (range: 1m-13y). The male to female ratio was 1.7:1. Suppurative lymphadenitis was seen in 25 of 35 (71%) cases. Among cases with disseminated disease, primary immunodeficiency (PID) was identified in nine (64%) cases. All cases with non-suppurative lymphadenitis were managed conservatively. Twenty (80%) cases with suppurative lymphadenitis were managed differently with medical treatment or surgery. In disseminated cases, three (43%) were treated with only medical treatment and eight (57%) with both medical and surgical treatment.
Conclusions:
Most children with BCG complications had a local disease in our study. A higher rate of disseminated disease was also observed. In addition, PID was identified in most children with disseminated disease. Development of more appropriate BCG vaccines and changing the current vaccination programme in cases with suspected PID are required in our country.
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