Youngster Jack Clarke was taken ill during the game and had to be taken to hospital where he was kept overnight but has since been released and will not take part in training this week.
'The player is responsive and attending hospital with the club's head of medicine and performance.
Leeds boss Marcelo Bielsa confirmed Clarke was feeling "better" in the dressing room but would be checked in hospital.
'He was taken to the hospital to see if everything was alright'.
Global oil supply falls in January '19: OPEC
WTI Crude, according to Goldman Sachs, will average US$55.50 a barrel, compared with an earlier estimate of US$64.50 a barrel. The IEA left its demand growth forecast for 2019 unchanged from its last report in January at 1.4 million barrels per day.
James Milner might have one good season left in him and Klopp thinks that if he can get Jack Clarke in exchange for his midfielder then it will be a really good bargain.
In a statement issued just after the match, Leeds United said: "Jack Clarke began to feel unwell during the second half of our Sky Bet Championship fixture with Middlesbrough and received medical attention". "All our thoughts go to the lad Clarke".
The 22-year-old joined on a season-long loan from Chelsea in August but has yet to make an appearance for Leeds as injury has disrupted his playing time.
So far Clarke has played 15 games in the league - scoring two goals and providing two assists.
Terrorists target IRGC bus in southeastern Iran
Jundallah, a Sunni extremist group whose members have joined Jaish al-Adl, claimed responsibility for that attack. The Sunni Muslim militant group, Jaish al-Adl (Army of Justice), has said it was behind the bombing.
Marcelo Bielsa's side are now second in the table, trailing Norwich City by two points.
They also extended their hold on an automatic promotion place over third-placed Sheffield United back to three points, matching the Blades' 3-3 draw with Aston Villa on Friday.
Leeds remain second in the Championship after Kelvin Phillips grabbed a last-gasp equaliser to rescue a point against Middlesbrough.
Madrid can win fourth straight Champions League, says Courtois
He's really competitive and that's why he's played this many games. "He has been, and remains, a fantastic captain". We have great memories of this stadium. "His adaptation has been very fast", Solari said.