Glomerulonephritis, secondary to bacterial, or, more rarely, viral or parasitic infections, is called infection-associated. The epidemiology of infection-associated glomerulonephritis has changed in recent decades. For a long time, the classic form has been acute poststreptococcal glomerulonephritis (APGN), but in developed countries its incidence has declined sharply. However, there is an increase in staphylococcal associated glomerulonephritis (SAGN). The clinical manifestations of APGN and SAGN are different: APGN typically presents with a glomerulonephritis after an infectious latency period (post-infectious), while SAGN typically shows an immune complex glomerulonephritis concomitant with infection (para-infectious). SAGN often presents with an occult infections in older patients with multiple comorbidities.
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