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2/15

What action will you take?

  • Is this a disease cluster?
  • Are all the cases epidemiologically linked?
  • Does anyone else need chemoprophylaxis?
  • What information do you need to make your decision?

Take some time to think through your answers before checking them.

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Answers to Exercise 1

Is this a disease cluster?

Yes - there are at least 2 confirmed/probable cases who attend the same university arising within a four-week period.

Are all the cases epidemiologically linked?

There is some evidence for an epidemiological link between cases - we know that the 3 cases occurred among students living in the same halls of residence (Accommodation block A).

Does anyone else need chemoprophylaxis?

As there are now three cases (one probable, two confirmed) therefore prophylaxis of a wider group than close contacts of each case should be considered.

What information do you need to make your decision?

You would like to know if there have been any further cases of meningococcal disease in the local area and if these cases had any epidemiological links to the cases in accommodation block A.

You would also like some information on the relationships between the meningococcal strains that have been isolated from the cases but Public Health actions should be taken based on the available epidemiological evidence, without waiting for further strain information.

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