False statement about impetigo –

Impetigo is a highly contagious (infectious) Gram-positive bacterial infection of the superficial layer of the epidermis. It occurs in two forms :- Impetigo contagiosa (Non-bullous) → Caused by both staph aureus & streptococcus (group `A ) Bullous impetigo Caused by Staph.aureus. Lesions of Impetigo contagiosa heal without scarring. For treatment of Impetigo contagiosa, Systemic Erythromycin is given to cover and Staphylococcus Streptococcus.  Glomerulonephritis may occur after streptococcal skin (e.g. impetigo, ecthyma) or throat infection, whereas rheumatic fever can develop only after throat infection (not skin infection). Therefore, Impetigo can cause glomerulonephritis but not rheumatic fever.