Narrative:

After my break I returned to the cockpit and advised the [relief pilot] who was relieving the first pilot that I felt like I was running a fever; which I most certainly was. I felt it was either a uti; or bladder infection. Onset was rapid; and decline was rapid. I realized the safest course of action was to have the first officer's (first officer) make the landing. The first officer's contacted ATC and dispatch and [requested priority handling]. Sudden onset of illness; resulting in high fever. Hydrate more. Three 3-day trips in a row with one day off between each. Most certainly I have been running dehydrated.

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Original NASA ASRS Text

Title: B777 flight crew reported the Captain's sudden onset of illness during flight resulted in the First Officer and Relief Pilot assuming flying duties that led to an uneventful landing.

Narrative: After my break I returned to the cockpit and advised the [Relief Pilot] who was relieving the First Pilot that I felt like I was running a fever; which I most certainly was. I felt it was either a UTI; or bladder infection. Onset was rapid; and decline was rapid. I realized the safest course of action was to have the FO's (First Officer) make the landing. The FO's contacted ATC and Dispatch and [requested priority handling]. Sudden onset of illness; resulting in high fever. Hydrate more. Three 3-day trips in a row with one day off between each. Most certainly I have been running dehydrated.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.