Injured player?

[DJ_NV]

Fed rules:

Had a game last night where near the end of the second quarter, the visiting team's Right Tackle began to throw up. He first did it (that I noticed) after a play, and then did it when set at the line on almost every play until halftime (probably six or so consecutive plays). For what it's worth, we all could tell that it was almost all water. Our HL informed the coach who said that he wanted to leave him in the game because "we don't have anyone else to play that position" (though there were at least 20-25 players on the bench).

He continued to throw up frequently throughout most of the 3rd quarter, then either he stopped or I quit noticing.

My question is if consistent vomiting is considered to be an "injury" or at least falls under the communicable diseases, i.e. excessive blood, etc. rule?

I hated to see the kid suffer like that but I didn't know if I had a rule to back me up if I were to send him out, especially as this was a critical game with playoff implications for both teams.

Finally, unusual heat/humidity were not factors. Outside temp was low 60s and I live in the high desert so -14% humidity.