Chlamydia trachomatis genotypes in school adolescents, Italy

Area of Science:

• Microbiology
• Infectious Diseases
• Public Health

Background:

• Chlamydia trachomatis is a leading cause of sexually transmitted infections globally.
• Understanding the genetic diversity and transmission patterns of C. trachomatis is crucial for effective control strategies.
• Adolescents and young adults are a key demographic for C. trachomatis infections.

Purpose of the Study:

• To determine the genogroups of Chlamydia trachomatis in school students aged 18 or older in Brescia, Italy.
• To investigate the genetic diversity using ompA and multilocus sequence typing (MLST).
• To assess potential sexual transmission patterns within this population.

Main Methods:

• Analysis of consecutive C. trachomatis isolates from school students (aged ≥18 years) in Brescia, Italy (2012-2013).
• Genotyping using the ompA gene and multilocus sequence typing (MLST).
• Identification of ompA genovars and sequence types (STs).

Main Results:

• A total of 40 C. trachomatis isolates were analyzed.
• Four ompA genovars and 18 distinct STs were identified.
• Genovar E was the most prevalent (70%), with five STs derived from ST59 (29% of all isolates).

Conclusions:

• The study identified limited genetic diversity and specific prevalent strains of C. trachomatis in the studied adolescent population.
• The findings suggest restricted sexual mixing and interchange within this group of school students.
• Further research on transmission dynamics in young populations is warranted.