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Updated: May 12, 2026

Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Meningococcal carriage in adolescents and young adults in Kuwait
Mohammed Alghounaim1, Hamad Bastaki2, Mohammed Egaila3
1Department of Pediatrics, Amiri Hospital, Kuwait City, Kuwait.
Background:
Neisseria meningitidis is a major cause of invasive meningococcal disease (IMD), with asymptomatic carriage playing a crucial role in transmission. Adolescents (15-17 years) and young adults (18-20 years) have the highest carriage rates, yet data from Kuwait remain limited. This study aimed to estimate the prevalence of N. meningitidis carriage among adolescents and young adults in Kuwait.
Methods:
A cross-sectional study was conducted from July 2023 to May 2024, enrolling 1,398 participants aged 15-20 years. Randomly selected individuals provided oropharyngeal swabs, and demographic, behavioral, and vaccination data were collected via standardized questionnaires. Carriage prevalence was determined using selective culture-based methods. Whole genome sequencing was performed on culture-confirmed isolates. Descriptive statistics were used to summarize participant characteristics; carriage prevalence was reported as proportions, and associations were explored using Fisher's exact or chi-square tests and logistic regression where feasible.
Results:
The overall meningococcal carriage rate was 0.21% (3/1,398). All isolates were non-groupable (NG), with one carrying the capsule null locus (CNL). Self-reported MenACWY vaccination coverage was 94.8%. No significant associations between demographic, geographic, or behavioral factors and carriage status were identified due to the small number of positive cases.
Conclusion:
This study provides a population-based estimate of meningococcal carriage among adolescents and young adults in Kuwait using a random sampling approach. The low carriage rate, alongside high vaccination coverage, suggests that existing immunization programs in Kuwait may be effective in reducing N. meningitidis transmission. However, the presence of NG strains stresses the need for continued surveillance. Further research is required to evaluate long-term vaccination impacts and potential gaps in disease protection.
Insights
In Kuwait, a study found a low carriage rate of Neisseria meningitidis (0.21%) in adolescents and young adults. High MenACWY vaccination coverage may contribute to this, but ongoing surveillance for non-groupable strains is recommended.
Area of Science:
- Microbiology
- Epidemiology
- Public Health
Background:
- Neisseria meningitidis causes invasive meningococcal disease (IMD).
- Asymptomatic carriage is key to N. meningitidis transmission.
- Adolescents and young adults exhibit highest carriage rates, with limited data from Kuwait.
Purpose of the Study:
- To determine the prevalence of N. meningitidis carriage in Kuwaiti adolescents and young adults.
- To assess potential associations between carriage and demographic/behavioral factors.
- To provide population-based carriage data for public health strategies.
Main Methods:
- Cross-sectional study of 1,398 individuals aged 15-20 years in Kuwait (July 2023-May 2024).
- Oropharyngeal swabs collected for culture-based N. meningitidis detection.
- Demographic, behavioral, and vaccination data gathered via questionnaires; whole genome sequencing performed on isolates.
Main Results:
- Overall N. meningitidis carriage rate was 0.21% (3/1,398).
- All identified isolates were non-groupable (NG); one carried the capsule null locus (CNL).
- Self-reported MenACWY vaccination coverage was high (94.8%); no significant associations with carriage were found due to low case numbers.
Conclusions:
- Low carriage rates in Kuwait may indicate effectiveness of current immunization programs.
- Continued surveillance for N. meningitidis, especially NG strains, is necessary.
- Further research should evaluate long-term vaccine impact and potential protection gaps.
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