The right message at the right time from the right person can save lives .Crisis and emergency risk communication help health communicators,emergency responders and leaders of organizations communicate effectively. CERC is the attempt by public health professionals to provide information that allows individuals ,stakeholders and entire communities to make the best possible decisions for their well being during a crisis or emergency.Six principles of CERC are Be right,Be first,Be credible,Express empathy,Promote action,Show respect.