Table 2.

Input/output variables and their fuzzy sets.

Input/output variables	Fuzzy sets
Cough (Input 1)	{Low, medium, high}
Fever (Input 2)	{Low, medium, high}
Sore throat (Input 3)	{Low, medium, high}
Cardiovascular disease (Input 4)	{Low, medium, high}
High blood pressure (Input 5)	{Low, medium, high}
Age (Input 6)	{Low, medium, high, very high}
Sex (Input 7)	{Low, high}
Travel history during the last 3 weeks (Input 8)	{Low, high}
Prescription (output)	{Risk level 1, 2, 3, 4, 5}