Understanding Typhoid Fever and Prevention

Professor Dave discusses typhoid fever, a life-threatening illness often linked to international travel. Symptoms include high fever, stomach pain, and diarrhea. Without treatment, it can be fatal. The disease is caused by Salmonella typhi, spread via the fecal-oral route. Historical context is provided through the story of Typhoid Mary, an asymptomatic carrier. Diagnosis involves lab tests, and treatment requires antibiotics. Preventive measures include vaccination and careful food and water consumption, especially when traveling to high-risk areas.

What is the primary symptom of typhoid fever?

• Cough

• Stomach pain

• Sustained high fever

• Headache

Which regions have a low prevalence of typhoid fever?

• Africa and South America

• Southeast Asia

• India and Pakistan

• United States and Canada

Who was Typhoid Mary?

• A nurse who treated typhoid patients

• A famous carrier of the typhoid bacterium

• A doctor who discovered typhoid

• A scientist who developed the typhoid vaccine

What family does Salmonella typhi belong to?

• Streptococcaceae

• Enterobacteriaceae

• Lactobacillaceae

• Bacillaceae

How does Salmonella typhi primarily spread?

• Direct contact

• Vector-borne transmission

• Fecal-oral route

• Airborne transmission

What is the role of flagella in Salmonella species?

• To produce toxins

• To help them move

• To resist antibiotics

• To form spores

What is the recommended action if someone has a fever higher than 102°F?

• Take over-the-counter medication

• See a doctor immediately

• Rest at home

• Drink plenty of fluids

Why is it important to complete the full course of antibiotics for typhoid fever?

• To prevent dehydration

• To avoid antibiotic resistance

• To reduce fever quickly

• To improve digestion

What is a key preventive measure when traveling to high-risk areas for typhoid fever?

• Wearing a mask

• Getting vaccinated

• Using insect repellent

• Avoiding all fruits

What is the incubation period for typhoid fever symptoms to appear?

• 10-14 days

• 4-6 days

• 15-20 days

• 1-3 days