http://www.niaid.nih.gov/ has been crawled 1,457 times going all the way back to August 8, 1996.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
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January 1, 2011

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January 6, 2011

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January 8, 2011

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January 13, 2011

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January 14, 2011

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January 17, 2011

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January 20, 2011

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January 21, 2011

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January 27, 2011

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January 28, 2011

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February 3, 2011

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February 4, 2011

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February 10, 2011

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February 11, 2011

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February 17, 2011

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February 19, 2011

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February 25, 2011

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March 4, 2011

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March 5, 2011

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March 11, 2011

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March 19, 2011

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March 20, 2011

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March 25, 2011

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March 27, 2011

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Apr

April 1, 2011

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April 3, 2011

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April 7, 2011

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April 8, 2011

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April 11, 2011

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April 15, 2011

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April 22, 2011

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April 29, 2011

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April 30, 2011

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May
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May 6, 2011

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May 14, 2011

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May 20, 2011

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May 26, 2011

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June 2, 2011

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June 6, 2011

1 snapshot

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June 7, 2011

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June 10, 2011

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June 16, 2011

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June 23, 2011

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June 27, 2011

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July 3, 2011

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July 4, 2011

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July 8, 2011

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July 17, 2011

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July 18, 2011

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July 21, 2011

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July 27, 2011

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Aug
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Sep
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Oct
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Nov
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Dec
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Note

This calendar view maps the number of times http://www.niaid.nih.gov/ was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.