Disease surveillance programs often use traps baited with CO2 (in the form of dry ice) to catch mosquitoes, which are then tested for the presence of viruses.

• 在疾病监测计划中，经常把干冰形式的二氧化碳用作诱饵来捕捉蚊子，然后再检查这些蚊子中是否有病毒出现。