*Secondary invasion by [[Staphylococcus spp.|''Staphylococcus aureus'']] and [[Staphylococcus spp.|''Staphylococcus intermedius'']] are common and cause pustules in the hair follicles
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*Secondary invasion by ''[[Staphylococcus aureus]]'' and [[:Category:Staphylococcus species|''Staphylococcus intermedius'']] are common and cause pustules in the hair follicles