Prevalence of group a beta hemolytic streptococcus in an academic community of risaralda, Colombia

Aim: To determine the prevalence of group A beta hemolytic Streptococcus in the academic community of the Fundación Universitaria Autónoma de las Américas sede Pereira. Methods: Descriptive clinical epidemiological study. A sample of 226 people was obtained from the academic community to which a structured survey type instrument was applied. A throat sample was taken with swab and the material obtained was cultured on 5% sheep blood agar medium in the presence of 10% CO2. Bacitracin susceptibility test was performed at a concentration of 0.04 U. A sample of 5 ml of peripheral blood was taken in a dry tube to obtain serum, in order to perform a rapid test for titration of Antistreptolysin (ASLO) and Measurement of anti-Streptococcus beta hemolytic type a antibodies by the latex agglutination technique. Results: The prevalence of β-hemolytic Streptococcus was 47.34% (n=107) in subjects of the academic community. The distribution according to the results of the culture for SBHGA of 4.42% (n=10), sensitivity to bacitracin appears in 4.4% of the 226 people under investigation, the ASO TEST of 400 UI/mL, was n=10 represented by 4.42%; for asymptomatics with ASO titre of 200 UI/mL was the 42.92% (n = 97). Conclusion: This study shows a percentage of positivity of 4.42% (n=10) with tonsilpharyngitis and highlights the problem of asymptomatic patients with a 42.92% of prevalence (n=97) which is considered a risk factor for acute pharyngotonsillitis.