Suspected exposures to novel coronaviruses are those who are exposed to patients, wildlife, objects and environments that test positive for novel coronaviruses and who are not effectively protected at the time of exposure, such as processing, selling, handling, distribution or management. Since the main modes of transmission of novel coronaviruses are respiratory droplet transmission and contact transmission. Therefore, the public should take certain protective measures in their daily life, including avoiding crowded places, wearing masks, maintaining hand hygiene and keeping indoor ventilation to reduce the risk of infection.