On the basis of the outbreak investigation, it was decided to carry out a reactive mass vaccination campaign targeting 366,052 people in the health district of Ouahigouya.

根据疫情调查结果，决定在瓦希古亚卫生区开展反应性的大规模疫苗接种运动，目标人群为366 052人。

youdao

I haven't seen any investigation of who it was that refused the request, or what their supposed basis was for doing so.

我还没有看到任何调查，说明是谁拒绝了这个请求，或者基于什么理由拒绝。

youdao

The investigation failed to provide enough evidence to form the basis of a case, however.

然而这项调查没有提供足够的证据，以构成这一案例的根据。

youdao

"On the basis of Joe Jamail's allegations alone, there may be some basis for an investigation, " Cornyn says.

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It added that it was unable to disclose the findings of Macfarlanes' report "due to exposure to unacceptable legal risks that exist (primarily in Indonesia) as a result of the undisclosed provenance of the materials which formed the basis of the investigation, together with the unsubstantiated nature of the allegations".

BBC: Bumi probe unable to back irregularity claims

Does the FBI begin an investigation on the basis of a citizen making a complaint?

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