Population health and ethics for AMC MCQ

A 4 year old unvaccinated child presents with 4 days of high fever, cough, coryza and red eyes, and today a blotchy rash that started on the face and is spreading down the body. There are small white spots on the buccal mucosa. He has recently returned from overseas. He is sitting in a busy shared paediatric waiting room. What is the most likely diagnosis?

1. Measles correct Correct. Fever, cough, a runny nose and red eyes, with mouth spots and a blotchy rash spreading down the body, in an unvaccinated child who has just travelled, is measles.
2. Enteroviral exanthem A general viral rash without the mouth spots or the fever-and-cough lead-up seen in measles. But the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller does not point to it.
3. Kawasaki disease A fever that lasts days, with rash, red eyes, changes in the mouth and lips, and changes in the hands and feet, in a young child. It does not fit the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.
4. Rubella A milder illness with a rash and tender swollen glands at the back of the neck. It is dangerous in pregnancy. Here, the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller points elsewhere.
5. Scarlet fever A rough, sandpaper-like rash with a red bumpy tongue and sore throat, from a streptococcus germ. That does not match the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.

The point: Measles is a very catching illness that must be reported to health authorities by law. It is a good example of how health teams manage disease across a whole population. It starts with high fever, cough, a runny nose and red eyes. Then come small white spots inside the mouth (Koplik spots), followed by a blotchy rash that spreads from the face down the body. Doctors diagnose it by how it looks, and confirm it with a swab test (PCR) and a blood test. Because measles must be reported, a suspected case is told to the public health unit straight away, without waiting for the test result. This starts contact tracing and stops the outbreak spreading. A person is catching before the rash even appears, so they must be kept away from others, including waiting rooms, and cared for with airborne isolation. People who are not protected and have been exposed can get the MMR vaccine within 72 hours, or an immunoglobulin injection within 6 days if the vaccine is not safe for them, such as babies, pregnant women, and people with a weak immune system. The way to prevent measles is two doses of the MMR vaccine, and it is low vaccine coverage that allows outbreaks to happen. Complications include pneumonia, brain inflammation (encephalitis), and a rare, serious brain disease that can appear years later called subacute sclerosing panencephalitis.

Source: Australian Department of Health and Aged Care (CDNA) — Measles: national guidelines for public health units Australian Department of Health and Aged Care · tier 1, national regulator or guidance

A 4 year old unvaccinated child presents with 4 days of high fever, cough, coryza and red eyes, and today a blotchy rash that started on the face and is spreading down the body. There are small white spots on the buccal mucosa. He has recently returned from overseas. He is sitting in a busy shared paediatric waiting room. What is the most appropriate initial investigation?

1. Measles PCR and serology A swab from the nose and throat, or a urine test, plus a blood antibody test, confirm the diagnosis. It does not fit the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.
2. Airborne isolation on arrival The patient is kept away from waiting areas straight away, because measles spreads through the air. But the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller does not point to it.
3. Assessment for complications Pneumonia and brain inflammation are actively checked for. That does not match the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.
4. Ascertainment of vaccination status Finds out if the person and their contacts are protected or not. Here, the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller points elsewhere.
5. Immediate notification to the public health unit correct Correct. Measles must be reported by law, on suspicion, before the test result comes back, to start contact tracing and outbreak control.

The point: Measles is a very catching illness that must be reported to health authorities by law. It is a good example of how health teams manage disease across a whole population. It starts with high fever, cough, a runny nose and red eyes. Then come small white spots inside the mouth (Koplik spots), followed by a blotchy rash that spreads from the face down the body. Doctors diagnose it by how it looks, and confirm it with a swab test (PCR) and a blood test. Because measles must be reported, a suspected case is told to the public health unit straight away, without waiting for the test result. This starts contact tracing and stops the outbreak spreading. A person is catching before the rash even appears, so they must be kept away from others, including waiting rooms, and cared for with airborne isolation. People who are not protected and have been exposed can get the MMR vaccine within 72 hours, or an immunoglobulin injection within 6 days if the vaccine is not safe for them, such as babies, pregnant women, and people with a weak immune system. The way to prevent measles is two doses of the MMR vaccine, and it is low vaccine coverage that allows outbreaks to happen. Complications include pneumonia, brain inflammation (encephalitis), and a rare, serious brain disease that can appear years later called subacute sclerosing panencephalitis.

Source: Australian Department of Health and Aged Care (CDNA) — Measles: national guidelines for public health units Australian Department of Health and Aged Care · tier 1, national regulator or guidance

A 4 year old unvaccinated child presents with 4 days of high fever, cough, coryza and red eyes, and today a blotchy rash that started on the face and is spreading down the body. There are small white spots on the buccal mucosa. He has recently returned from overseas. He is sitting in a busy shared paediatric waiting room. What is the most appropriate next step in management?

1. MMR vaccine within 72 hours for susceptible contacts Prevention treatment for unprotected contacts, given quickly after exposure. But the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller does not point to it.
2. Supportive care for the case Fluids, fever-lowering medicine and rest, with vitamin A given in certain settings. Here, the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller points elsewhere.
3. Exclusion from school or work during the infectious period Stops the illness spreading further in the community. That does not match the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.
4. Normal human immunoglobulin within 6 days For contacts who cannot safely have the vaccine, such as babies, pregnant women and people with a weak immune system. It does not fit the picture of fever and cough, mouth spots, and a rash spreading downward in an unvaccinated returned traveller.
5. Notify the public health unit immediately correct Correct. This is the single most important step for the wider community, because it starts the whole contact-tracing response.

The point: Measles is a very catching illness that must be reported to health authorities by law. It is a good example of how health teams manage disease across a whole population. It starts with high fever, cough, a runny nose and red eyes. Then come small white spots inside the mouth (Koplik spots), followed by a blotchy rash that spreads from the face down the body. Doctors diagnose it by how it looks, and confirm it with a swab test (PCR) and a blood test. Because measles must be reported, a suspected case is told to the public health unit straight away, without waiting for the test result. This starts contact tracing and stops the outbreak spreading. A person is catching before the rash even appears, so they must be kept away from others, including waiting rooms, and cared for with airborne isolation. People who are not protected and have been exposed can get the MMR vaccine within 72 hours, or an immunoglobulin injection within 6 days if the vaccine is not safe for them, such as babies, pregnant women, and people with a weak immune system. The way to prevent measles is two doses of the MMR vaccine, and it is low vaccine coverage that allows outbreaks to happen. Complications include pneumonia, brain inflammation (encephalitis), and a rare, serious brain disease that can appear years later called subacute sclerosing panencephalitis.

Source: Australian Department of Health and Aged Care (CDNA) — Measles: national guidelines for public health units Australian Department of Health and Aged Care · tier 1, national regulator or guidance