Question

Selma, who usually considers herself to be very healthy, texted her friend that she would not be able to make it to her party because she did not feel well. Selma was embarrassed to add that she had been vomiting and having diarrhea all day. Based on these symptoms, what infectious illness does Selma most likely have?

Answer 1

Most likely acute viral gastroenteritis—classically norovirus ("stomach flu"). The sudden onset of vomiting and diarrhea in an otherwise healthy adult is typical of norovirus (highly contagious, fecal–oral transmission).