Narrative:

While preparing for departure from cos airport I vomited on the ramp area. It was fairly sudden and I hadn't had symptoms previous to this except a little loss of appetite. Once I finished being sick I felt 100 percent better. I notified the captain and we discussed the situation. I decided to continue the operation back to stl. I reasoned that it seemed whatever it was that made me sick was gone now since I now felt fine. Boy was I wrong. An hour into flight I was suddenly sick again. Then right after felt better again. I was able to complete my PNF duties, but feel I was absolutely stupid to have flown on to stl. I had never had symptoms like this before, but I learned a big lesson from this. That lesson being that my stomach can be unpredictable. I didn't realize what was coming. I got into stl, the company called out a reserve and I went home. I was extremely ill for the next 24 hours. I believe I may have caught some sort of flu. A fever also later developed. Well, I won't do that again! I will use informed judgement next time.

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Original NASA ASRS Text

Title: FO'S ILLNESS AT COS RAMP IS ACCEPTED AND FLT CONTINUES TO STL. FO OFF DUTY AT STL. FLC BEHAVIOR PHYSICAL DISCOMFORT ILLNESS.

Narrative: WHILE PREPARING FOR DEP FROM COS ARPT I VOMITED ON THE RAMP AREA. IT WAS FAIRLY SUDDEN AND I HADN'T HAD SYMPTOMS PREVIOUS TO THIS EXCEPT A LITTLE LOSS OF APPETITE. ONCE I FINISHED BEING SICK I FELT 100 PERCENT BETTER. I NOTIFIED THE CAPT AND WE DISCUSSED THE SIT. I DECIDED TO CONTINUE THE OP BACK TO STL. I REASONED THAT IT SEEMED WHATEVER IT WAS THAT MADE ME SICK WAS GONE NOW SINCE I NOW FELT FINE. BOY WAS I WRONG. AN HR INTO FLT I WAS SUDDENLY SICK AGAIN. THEN RIGHT AFTER FELT BETTER AGAIN. I WAS ABLE TO COMPLETE MY PNF DUTIES, BUT FEEL I WAS ABSOLUTELY STUPID TO HAVE FLOWN ON TO STL. I HAD NEVER HAD SYMPTOMS LIKE THIS BEFORE, BUT I LEARNED A BIG LESSON FROM THIS. THAT LESSON BEING THAT MY STOMACH CAN BE UNPREDICTABLE. I DIDN'T REALIZE WHAT WAS COMING. I GOT INTO STL, THE COMPANY CALLED OUT A RESERVE AND I WENT HOME. I WAS EXTREMELY ILL FOR THE NEXT 24 HRS. I BELIEVE I MAY HAVE CAUGHT SOME SORT OF FLU. A FEVER ALSO LATER DEVELOPED. WELL, I WON'T DO THAT AGAIN! I WILL USE INFORMED JUDGEMENT NEXT TIME.

Data retrieved from NASA's ASRS site as of July 2007 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.