Case Report

Meningitis Due to an Unusual Human Pathogen: Streptococcus equi subspecies equi

Authors: Gabriel-Adrian Popescu, MD, PHD, Raluca Fuerea, MD, Elisabeta Benea, MD, PHD


Streptococcus equi subspecies equi is involved in human infection. We present a case of meningitis in a 75-year-old patient with a favorable outcome after ceftriaxone and dexamethasone therapy. To our knowledge, it is the first case reported in an adult.

Key Points

Streptococcus equi subspecies equi human transmission is possible even in a patient with minimal equine contact.

Streptococcus equi is involved in severe human infections, such as meningitis.

* Ceftriaxone and corticosteroid treatment is successful.

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1. Bradley SF, Gordon JJ, Baumgartner DD, et al. Group C streptococcal bacteremia: analysis of 88 cases. Rev Infect Dis 1991;13:270–280.
2. Elsayed S, Hammerberg O, Massey V, et al. Streptococcus equi subspecies equi (Lancefield group C) meningitis in a child. Clin Microbiol Infect 2003;9:869–872.
3. Breiman RF, Silverblatt FJ. Systemic Streptococcus equi infection in a horse handler – a case of human strangles. West J Med, 1986;145:385–386.
4. Francis AJ, Nimmo GR, Efstatiou A, et al. Investigation of milk-borne Streptococcus zooepidemicus infection associated with glomerulonephritis in Australia. J Infect 1993;27:1776–1780.
5. Lee AS, Dyer JR. Severe Streptococcus zooepidemicus infection in a gardener. MJA 2004;180:366.
6. Freney J, Bland S, Etienne J, et al. Description and evaluation of the semiautomated 4-hour rapid ID 32 Strep method for identification of streptococci and related genera. J Clin Microbiol 1992;30:2657–2661.
7. Gonzalez-Lama Z, Gonzalez JJ, Tejedor MT, et al. Sensitivity of groups A, B and C beta hemolytic streptococci to antibiotics. Rev Esp Quimioter 1999;12:215–219.
8. Downar J, Willey BM, Sutherland JW, et al. Streptococcal meningitis resulting from contact with an infected horse. J Clin Microbiol 2001;39:2358–2359.
9. Shah SS, Matthews RP, Cohen C. Group C streptococcal meningitis: case report and review of the literature. Pediatr Infect Dis J 2001;20:445–448.
10. Ural O, Tuncer I, Dikici N, et al. Streptococcus zooepidemicus meningitis and bacteremia. Scand J Infect Dis 2003;35:206–207.
11. Bhally H, Casey K. Endogenous endophthalmitis secondary to Streptococcus group C infection.Infect Med 2004;21:128–130.