Group a streptococcal diseases and their global burden

Area of Science:

• Microbiology
• Infectious Diseases
• Epidemiology

Background:

• Group A Streptococcus (GAS), or Streptococcus pyogenes, is a significant human pathogen.
• GAS causes a wide spectrum of diseases, from superficial infections to life-threatening invasive conditions and autoimmune sequelae.
• Despite historical reductions, GAS remains a leading cause of global infectious morbidity and mortality, affecting over 18 million people.

Purpose of the Study:

• To review GAS transmission, prevention strategies, and historical/geographical trends.
• To report on the estimated global disease burden attributable to GAS.
• To highlight the need for improved surveillance and research in low-resource settings.

Main Methods:

• Review of existing literature on GAS transmission and prevention.
• Analysis of historical and geographical trends in GAS infections.
• Estimation of the global burden of disease caused by GAS.

Main Results:

• GAS infections manifest diversely, including invasive disease, toxin-mediated illnesses, and autoimmune complications.
• The global burden of serious GAS disease is substantial, with over 18 million estimated cases.
• Disease burden disproportionately impacts impoverished populations, children, young adults, and pregnant women in low-resource settings.

Conclusions:

• Accurate estimation of GAS rates is hampered by inconsistent reporting, especially in low-resource areas.
• Enhanced surveillance and epidemiological research are essential for accurate burden assessment.
• Improved data will enable better targeting and evaluation of control strategies for GAS.