When an agency sets up an emergency healthcare response line, the agency should know that 80 - 90% of the calls won't require urgent attention. Between 2% - 10% of the call are the critical issues.

So an IVR system should be enabled to filter the calls. Press 1 if you have fever
Press 2 if you have fever and cough with a contact history

Press 3 if you have fever, cough, travel history or contact with an infected person.

If not the 80% will prevent the agency from reaching those with genuine concerns.

#COVID19Nigeria @NCDCgov
A self service option will prevent the lines from getting jammed with calls. It will also offer vital information to those who are worried about their symptoms.
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