美国发布最新电子烟报告，引起严重肺病的物质基本确定

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.

美国疾病控制和预防中心（CDC）发布的一系列报告显示，电子烟引起的肺病病例数量此前达到峰值后，现在似乎正逐步下降。如之前推测的那样，维生素E醋酸酯似乎正是此流行病的罪魁祸首。

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.

国家医疗部门和CDC比较记录时发现，吸电子烟是这些病例的共同点，特别是使用四氢大麻酚。

Before long the CDC recommended ceasing all vape product usage and was collating reports and soliciting samples from around the country.

不久前，CDC建议停止使用所有电子烟产品，并对报告进行核对、在全国范围内征求样本。

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:

他们的医疗部门现在发布了疾病方面的数份报告。最重大的发现重复了之前的猜想，维生素E醋酸酯，一种用于劣质电子烟烟弹中的油性物质，至少是病情的一个主要诱因。

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.

在之前研究的基础上，CDC分析了来自16个州的EVALI病人的大量支气管肺泡灌洗液（BAL），并将其与健康人的BAL液进行了比较。

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.

在51名EVALI病人中，48人的BAL液中都含有维生素E醋酸酯，而健康人的BAL液中不含这种成分。在美国食品及药物管理局（FDA）和国家实验室检测的产品样本中也发现了维生素E醋酸酯。