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Table 1 The general clinical features of pyomyositis in temperate and tropical cases

From: Thigh pyomyositis caused by group A streptococcus in an immunocompetent adult without any cause

  Temperate cases Tropical cases
Ages [1, 2, 7] Adults (elderly) Children (2–5 years) and adults (35–40 years)
Underlying conditions [2, 8] Immunocompromised or serious underlying conditions, such as HIV infection, diabetes mellitus, leukemia, chronic renal failure, asplenia, scleroderma, rheumatoid arthritis, Felty’s syndrome, chemotherapy, or immunosuppressive treatment Healthy
Microbiology (S. aureus) [1] (%) 60–75 >90
Positive blood cultures [1] (%) 20–30 5–10
Mortality [6, 9] (%) 6.0–9.4 0.5–2.0