New diseases normally don't have particularly unusual symptoms, so until someone notices a strange pattern of cases or deaths, they pass unnoticed.
The Sun
It allows you to set a reminder alert to look for any unusual symptoms, as well as helping to improve your understanding of the disease.
The Sun
While 14 per cent stayed away, a whopping 63 per cent admitted they would 'rather not know' the reason for any unusual symptoms.
The Sun