Questions and Answers
What is the most common cause of infantile gastroenteritis with watery non-bloody diarrhea?
Rotavirus
Which of the following Rotavirus groups is the most common to cause GE?
Group A
In a rural community, there is a sudden increase in cases of gastroenteritis, particularly among adults. Investigation shows that the virus causing the outbreak is transmitted through contaminated water sources. Which virus is the likely cause?
Norovirus
Which virus can be contracted from eating shellfish?
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Which of the following viral gastroenteritis can be prevented by vaccine?
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Viral gastroenteritis is routinely detected by which laboratory test?
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Which type of virus is astrovirus?
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Which virus causes outbreaks of diarrhea in children under 5 years old?
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What is the most common cause of gastroenteritis in children?
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Which test is used for viral antigen detection in stool samples?
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What type of viruses are mostly transmitted by the fecal-oral route?
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Which type of adenovirus is included within the genus F?
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Which type of test uses color-particle-labeled antibodies for Ag-Ab reaction detection?
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Which virus has a vaccine available in the form of a live attenuated vaccine given orally in 3 doses?
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Which virus has an incubation period of 1-2 days?
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Which virus is known for causing vomiting with projectile characteristics?
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Which virus is most commonly found in children under 5 years old and has an incubation period longer than rotavirus?
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Which virus is characterized by an icosahedral capsid with protruding spikes?
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Which virus is known for causing mild illness and affects all age groups?
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What type of RNA does Rotavirus have?
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Which virus has an incubation period of 1-2 days?
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In a rural community, there is a sudden increase in cases of gastroenteritis, particularly among adults. Investigation shows that the virus causing the outbreak is transmitted through contaminated water sources. Which virus is the likely cause?
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Which virus can be contracted from eating shellfish?
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Which type of viruses are mostly transmitted by the fecal-oral route?
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Which test has the highest sensitivity & specificity among the immunoassay?
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What is the most sensitive and specific test in general?
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Which of the following methods can detect rotavirus and adenovirus 40, 41 at a single test?
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What is the most common cause of infantile gastroenteritis with watery non-bloody diarrhea?
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Which of the following viral gastroenteritis can be prevented by vaccine?
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Which virus causes outbreaks of diarrhea in children under 5 years old?
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Study Notes
- Gastroenteritis: infection causing inflammation in the gastrointestinal tract
- Rotavirus, Enteric Adenovirus, Caliciviruses, Astroviruses: common causes of gastroenteritis
- Rotavirus:
- Double-layered icosahedral capsid
- RNA-dependent RNA polymerase
- Transmitted through the faecal-oral route
- Most common in children under 5 years old
- Most common symptoms: watery diarrhea, vomiting, fever, dehydration
- Incubation period: 1-2 days
- Treatment: self-limiting, rehydration
- Prevention: improving sanitation and hygiene measures
- Vaccine: live attenuated vaccine, oral, 3 doses
- Enteric Adenovirus:
- Double-stranded DNA
- Icosahedral capsid with fibers
- Non-enveloped
- Transmitted through the faecal-oral route
- Most common in children under 5 years old
- Longer incubation period than rotavirus
- Milder symptoms than rotavirus
- Can cause prolonged illness
- Diagnosis: immunoassay, electron microscopy, RT-PCR
Caliciviruses and Astroviruses:
- Caliciviruses:
- Single-stranded RNA with positive polarity
- Icosahedral capsid with a cup-like depression on its surface
- Non-enveloped
- Transmitted through the faecal-oral route
- Most common symptoms: vomiting (projectile), diarrhea
- Affects all age groups, usually causes mild illness
- Diagnosis: immunoassay, electron microscopy, RT-PCR
- Astroviruses:
- Single-stranded RNA with positive polarity
- Icosahedral capsid with protruding spikes
- Non-enveloped
- Transmitted through the faecal-oral route
- Most common symptoms: diarrhea, vomiting, fever
- Most common in children under 5 years old
- Diagnosis: immunoassay, electron microscopy, RT-PCR.
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