2021年6月21日 · VVMs are small indicators that adhere to vaccine vials and change colour as the vaccine is exposed to cumulative heat, letting health workers know whether the vaccine has exceeded a pre-set limit beyond which the vaccine should not be used.

VVM标签，是一种含有 特殊热敏材料 的标签，粘在疫苗瓶上后，通过其颜色变化来反映疫苗受热损害的情况。 世界卫生组织 和 联合国儿童基金会 早在2007年，就发表了关于使用VVM 的政策声明，确认VVM是 目前唯一能够全程监测疫苗温度的工具。 也就是说，贴上VVM标签，疫苗从出厂到最终被使用的温度都能被监控。 接种人员可以根据它判断疫苗是否失效，还能否使用。 VVM标签怎么看？ 每一个疫苗的耐热性都是不一样的，因此，VVM标签也有不同种 …

A vaccine vial monitor (VVM) is a label containing a heat-sensitive material which is placed on a vaccine vial to register cumulative heat exposure over time. The combined effects of time and temperature cause the inner square of the VVM to

About the vaccine vial monitor (VVM) Vaccine vial monitors reduce wastage of good vaccine. Vaccine vial monitors ensure that only good vaccine is used on our children. Health workers can see at a glance whether the vaccine has been protected from heat sufficiently to be used.

2022年5月17日 · 由于跨国运输环节多、疫苗使用国冷链参差不齐等因素，所以世界卫生组织采购的疫苗要求贴一种时间温度标签，国内也有人称之为疫苗瓶温度控制标签（vvm，vaccine vial monitor），该标签在低温下响应慢，高温下响应…

A Vaccine Vial Monitor (VVM) is a specific type of time-temperature indicator (TTI) that is applied directly to individual vaccine vials, and would play a key role in any new policy recommendations regarding OCC and MDVP.

Oral polio vaccine is the most heat sensitive of all vaccines used in the Expamded Programme on Immunization (EPI). Storage and transport have to comply with good cold chain practices. However, cumulative heat exposure can now be monitored with the help of the vaccine vial monitor (VVM),1 which can be found on all OPV supplied by UNICEF since 1997.

2017年7月3日 · VVM的英文全称是Vaccine vial monitor，一般翻译为疫苗温度指示标签或疫苗热标签。 VVM的实质是一种热敏感标签，外观外圆内方，中间方形区域内含有热敏感染料，粘贴在疫苗瓶外以标示疫苗累积热暴露量。

The colour of the inner square of the VVM starts with a shade that is lighter than the outer circle and continues to darken with time and/or exposure to heat. Once a vaccine has reached or exceeded the discard point, the colour of the inner square will be the same colour or …

A vaccine vial monitor (VVM) is a thermochromic label put on vials containing vaccines which gives a visual indication of whether the vaccine has been kept at a temperature which preserves its potency.