作者：Tech Crunch 2019-12-30 14:01
The CDC has issued a set of reports showing that the lung disease associated with vaping seems to be declining from peak rates, and that Vitamin E acetate seems — as speculated early on — to be the prime suspect for the epidemic. The affliction has cost at least 54 lives and affected 2,506 people across the nation.
The condition now officially known as EVALI (E-cigarette, or Vaping, Product Use-Associated Lung Injury) appeared over the summer, with hundreds of people reporting chest pains, shortness of breath and other symptoms.
疾病的官方名称是EVALI（E-cigarette, or Vaping, Product Use-Associated Lung Injury），即电子烟或电子烟产品使用引起的肺部损伤。这种状况在今年夏季出现，数百人报告胸痛、呼吸短促或其他的症状。
When state medical authorities and the CDC began comparing notes, it became clear that vaping was the common theme between the cases — especially using THC products.
Before long the CDC recommended ceasing all vape product usage and was collating reports and soliciting samples from around the country.
Their medical authorities have now issued several reports on the disease. The most significant finding echoes earlier indications that Vitamin E acetate, an oily substance that was apparently being used as a cutting agent in low-quality vaping cartridges, is at the very least a major contributor to the condition:
Building upon a previous study, CDC analyzed bronchoalveolar lavage (BAL) fluid from a larger number of EVALI patients from 16 states and compared them to BAL fluid from healthy people.
Vitamin E acetate, also found in product samples tested by the FDA and state laboratories, was identified in BAL fluid from 48 of 51 EVALI patients and was not found in any of the BAL fluids of healthy people.