Salah contracted COVID-19 while away on international duty with Egypt and missed his country's fixtures against Togo.

The 28-year-old was criticised after videos emerged of him dancing in a crowd of people at his brother's wedding a few days before he was due to play for Egypt.

He will miss Liverpool's Premier League clash with leader Leicester City and his availability for the UEFA Champions League meeting with Atalanta on 29 November (AEDT) is also in doubt.

Salah has scored eight goals in eight Premier League appearances for Liverpool this season.

Klopp confirmed he had spoken to Salah about the issue but refused to discuss what internal action Liverpool had taken against the player.

"A brother's wedding is a very special moment," Klopp said.

"In other countries, in other situations, there's more social – I'm not sure if it's the word but – pressure, and stuff.

"He's probably back today. We are obviously in close contact with him all the time.

"How it always is in these cases is that when you have a negative test the process really starts. He's in a good place. He feels well. No symptoms.

"There is nothing to say in public about it. I have talked to my players about it. Nothing for the public. We are in the situation we are in.

"The rest is between Mo and me. We did that [talk] already and we are fine.

"What I can say about my players is they are incredibly disciplined. Football players in general are very disciplined."

Salah's absence with the virus added to Liverpool's ever-lengthening list of missing players as Klopp lost more key men to injury during the international break.

The most significant was Joe Gomez, who underwent surgery after he sustained a serious knee injury while on England duty.

Liverpool captain Jordan Henderson, meanwhile, felt "a bit of tightness", according to England coach Gareth Southgate and Klopp said he will not be fit to face the Foxes on Monday (AEDT).

Virgil van Dijk is a long-term injury absence with a knee issue, while fellow defender Trent Alexander-Arnold is still nursing a hamstring problem.

Alex Oxlade-Chamberlain is still continuing his rehab from a knee injury, but midfielders Fabinho and Thiago Alcantara are edging nearer to a return to fitness.

Klopp added: "They [Thiago and Fabinho] are all closer, but we’ll see if it's close enough for the weekend."

The Reds boss remains hopeful Liverpool's injury problems can help foster a sense of esprit de corps among his players.

He said: "We are a unit. A proper, proper unit. The more problems we have, the closer we stick together.

"We don't go for excuses, we have the situation we have, we don't like the injuries we have because it is really hard for the boys who have the injuries, but all the rest is working on solutions. That's what we always do.

"We have solutions in our mind. Maybe we think we have the worst situation possible, but the season is long and we have only played eight games, so there will be a lot of problems.

"I have always said, whoever deals best with the problems in front of them has a chance to be really successful. That’s what we try to be."