Ch. 16 - Viral Infections Of GI tract

Question 1

Hepatitis E (HEV)

Answer 1

Food borne infection - fecal oral route of transmission

Not in USA

Question 2

Viral Gastroenteritis

Answer 2

Explosive onset
Mistaken for stomach flu

Diarrhea, nausea, vomiting, fever, cramping, headache, malaise

Question 3

Rotavirus

Answer 3

Viral gastroenteritis

Contaminated food/water –> infect enterocytes of the small intestine - induce vomiting, diarrhea, chills

Deadly in children –> 500,00 deaths world wide each year

Two vaccines - RotaTeq, Rotarix

Often occurs during winter

Question 4

Norovirus

Answer 4

Common cause of viral gastroenteritis in adults

Transmission: fecal/oral, person to person, contaminated objects

Rapidly spread –> highly contagious

Recent outbreak on cruise ships

Leads to dehydration

Often in summer

Question 5

Enterovirus

Answer 5

Viral gastroenteritis

Coxsackie virus = Hand, Foot, and Mouth disease

Common in young children, esp in summer

Symptoms: fever, malaise, sore throat, rash on palms of hands and soles of feet

Question 6

Hepatitis A (HAV)

Answer 6

Transmitted through GI tract
Transmitted from contaminated food/water –> raw oysters: filter and concentrate virus from contaminated sea water

Acute inflammatory disease of the liver

• enlargement of liver
• jaundice

Vaccine: Havrix, Vaqta (if traveling)

Treatment: none