 The detection rates as de ned by successful classification are above 90 \% as long as the population infection rate is under 20\%, which indicates great application potential in epidemic risk prevention and control practice.
<clarity>  The detection rates as de ned by successful classification are above 90 \% as long as the population infection rate is under 20\%, which indicates great application potential in epidemic risk prevention and control practice.
 The accuracy of both detecting methods are above 90 \% as long as the population infection rate is under 20\%, which indicates great application potential in epidemic risk prevention and control practice.