The study was not set up to look at any differences between the two. The numbers were very small and there was uncertainty over their significance, said the researchers. Sheikh cautioned at a media briefing that the results are preliminary data, yet to be peer-reviewed by independent scientists, but added: I am very encouraged. Sheikh cautioned at a media briefing that the results are preliminary data, yet to be peer-reviewed by independent scientists, but added: I am very encouraged. He said the numbers were consistent with a relatively constant protection of about 70% at that stage.
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there was necessary to be acknowledged .
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