After hospital officials on Saturday said the condition of the lone Ebola patient diagnosed in the U.S. has worsened, the woman he came to Texas to visit said she is praying for his recovery.

Louise Troh said that she was not aware until a reporter told her that Thomas Eric Duncan’s condition had been deemed critical and that she had not spoken with him Saturday.

‘‘I pray in Jesus’ name that it will be all right,’’ Troh said in a telephone interview from the home where she and three others are being isolated.

Texas Health Presbyterian Hospital Dallas didn’t provide any further details or respond to questions about Duncan’s health on Saturday. The hospital has previously said Duncan, who was being kept in isolation, was in serious but stable condition.

Duncan traveled from disease-ravaged Liberia to Dallas last month before he began showing symptoms of the disease that has killed some 3,400 people in West Africa.

Health officials said Saturday that they are still monitoring about 50 people who may have had contact with Duncan for signs of the deadly disease. Among those are nine people who are believed to be at a higher risk. Thus far none have shown symptoms.

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