Following Monday’s news that recently named Boston Symphony Orchestra music director Andris Nelsons had to withdraw from conducting at Tanglewood on Saturday because of a severe concussion, two other artists have signaled they will miss weekend concerts as well.

Conductor/pianist Christoph Eschenbach, who was slated to perform on July 26 and July 28, cannot travel by plane due to an inner ear infection. Singer Ferruccio Furlanetto will miss performing the bass-baritone role in Verdi’s Requiem July 27 because of a bad cold.

The BSO issued a statement listing the following schedule changes: Edo de Waart will replace Eschenbach at the podium on July 26. Garrick Ohlsson will replace Eschenbach as piano soloist, performing Mozart’s Piano Concerto No. 27 in B-flat, K.595, in place of the originally scheduled Piano Concerto No. 12 in A, K.414. The rest of the program remains unchanged.

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Conductor Carlo Montanaro will step in for Nelsons for the performance of the Verdi Requiem on July 27. Bass-baritone Eric Owens will replace Furlanetto.

On Sunday, July 28, conductor Ludovic Morlot will lead the BSO in the originally scheduled program featuring pianist Garrick Ohlsson.

Nelsons suffered a concussion over the weekend at his home in Bayreuth, Germany, where he was conducting in the annual Wagner festival. He was hospitalized and advised not to travel.