Rapid MCQ of the day - 24/02/2026

General
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1

A child develops rash starting on face then spreading downward with fever and cough. Diagnosis?

Cephalocaudal rashes
Cephalocaudal rashes576×324 15.3 KB

  • Rubella
  • Measles
  • Chicken pox
  • Scarlet fever
0 voters

What is the causative agent?

Comment down below :backhand_index_pointing_down:

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2

Measles virus, which is a single-stranded, negative-sense, enveloped RNA virus

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3

rna virus

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4

Correct, measles is caused by an RNA virus from the genus Morbillivirus :microbe::books: Classic presentation makes clinical suspicion crucial. In suspected measles cases, would you prioritize serum measles-specific IgM detection or RT-PCR for early confirmation? :thinking:

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5

You are right. :books: Its structure explains its high transmissibility and respiratory spread. Which diagnostic method would you rely on during the early prodromal phase? RT-PCR from a throat/nasopharyngeal swab or measles-specific IgM serology? :thinking:

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In the early prodromal phase, RT-PCR from a nasopharyngeal swab is the gold standard because viral shedding is at its peak. IgM serology is often unreliable this early, as antibodies typically only reach detectable levels a few days after the rash appears.

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7

Paramyxovirus

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