• provide technical advice to the lead units (EHA) as required.

• promotes the use of appropriate vaccines as an emergency response. For example, see PAHO's Scientific Publication No. 420 "Epidemiological Surveillance after Natural Disasters" pages 56-58.

• provide technical support to facilitate confirming the diagnosis in an outbreak, and advise on the appropriate response

• provide short term technical assistance including:

- participating in a rapid assessment of the situation

- participating in EHA task forces

- participate in outbreak investigation

• collect epidemiological data during and after the emergency and provide epidemiological support for analysis of the cause of an outbreak of a vaccine-preventable disease.

• promote the move to normalize immunization activities and MCH services as soon as possible.

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