Stay extra safe: If the burger's not hot enough and you have to cook it longer, be sure to wash the thermometer before you test the meat again to avoid cross contamination.

更安全的做法：如果肉类还不够热，你应该再煮一段时间。记得在重新测量之前把温度计清洗干净，避免交叉感染。

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Conclusion FQ PCR is a method with high sensitivity, specificity, accuracy, efficiency and low cross contamination, and can be widely applied for diagnosis.

结论荧光定量pcr技术具有高灵敏性、高特异性、高精确性、效率高和污染小等特点，是一种有效、快速和简便的检测方法，具有广泛应用价值。

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When toothbrushes are stored in close together and touching in a tooth mug, the germs can pass from one to another, leading to the risk of cross contamination.

如果大家的牙刷都放到一个漱口杯里并且有所接触的话，细菌就会在牙刷之间相互传播，导致交叉感染。

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Cross-contamination is the cooking or serving of different foods with the same utensils and surfaces.

CNN: Food allergy diagnosis: What parents should know

Keeping unsafe items out of your food storage and preparation areas will reduce opportunities for cross-contamination.

CNN: Food allergy diagnosis: What parents should know

The bigger concern than reputation cross-contamination is the spillover of an actual security threat.

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