Contents

13 Mumps

13.8 Public health measures

It is a legal requirement that all cases of mumps be notified immediately on suspicion to the local medical officer of health.

All suspected mumps cases should be laboratory confirmed. See Appendix 8 for the specimens required for laboratory confirmation of mumps, or discuss these with the local laboratory.

When an outbreak of mumps occurs, all susceptible people (ie, those who have no previous history of mumps and have not received the mumps or MMR vaccine) should be offered MMR vaccine. The mumps vaccine given after exposure has not been shown to be effective in preventing infection, but immunisation will provide protection against future exposure. There is no increased risk of adverse events after immunisation during the incubation period of mumps or if the recipient is already immune. Immunoglobulin is ineffective after exposure to mumps.

Parents/guardians should be advised that children who are cases should be excluded from early childhood services or school until five days after the onset of illness, at which time they cease to be infectious. Previously immunised (pre-exposure) contacts need not be excluded from early childhood services or school.

Unimmunised contacts who have no previous history of mumps infection should be advised not to attend early childhood services or school because of:

Consider advising exclusion of susceptible contacts from school, early childhood services or work for 25 days after last exposure to the infectious case, if there are other susceptible people present.8 If a susceptible contact is vaccinated following exposure, they still need to be excluded (for the current outbreak) for 25 days. The vaccine given after exposure has not been shown to be effective in preventing infection, but immunisation will provide protection against future exposure. Contacts immunised prior to exposure do not need to be excluded.

For more details on control measures, refer to the Communicable Disease Control Manual 20128 or the Control of Communicable Diseases Manual.9