What symptom might occur later after a Streptococcus spp. infection?

Scarlet fever is a condition that can arise as a complication of a Streptococcus spp. infection, particularly with group A Streptococcus (Streptococcus pyogenes). It is characterized by a distinctive red rash and is linked to the production of toxins, which can occur after the initial throat infection or skin infection caused by the bacteria. This typically signifies that the streptococcal infection is progressing, showcasing the potential for more severe systemic effects.

High fever, vomiting, and severe diarrhea can also be associated with various types of infections, but they may not specifically indicate later complications resulting from a Streptococcus spp. infection. High fever can be an early symptom of infection, while vomiting and severe diarrhea are more often associated with gastrointestinal illnesses rather than specifically linked with the progression of a Streptococcus infection. Therefore, the association of scarlet fever with subsequent complications from the infection makes it the correct choice in this context.