Final answer:
Impetigo is a highly contagious disorder characterized by itchy vesicles and pustules caused by Streptococcus pyogenes.
Step-by-step explanation:
Impetigo is a highly contagious disorder characterized by itchy vesicles and pustules. It can be caused by Streptococcus pyogenes, Staphylococcus aureus, or a combination of both. The infection is often diagnosed through observation of its characteristic appearance which includes the formation of vesicles, pustules, and possibly bullae.
Diagnosis of impetigo is primarily done through visual observation of its characteristic sores but can be confirmed through culture and susceptibility testing. It is especially common in children and is transmitted via contact with the exudate from the sores, aerosols, or respiratory secretions of an infected individual.