American Airlines said it saw a measurable impact on its bookings from the Ebola virus last week, making it the first US airline to note such an effect due to concern about the possible spread of the disease in the US.

The Dallas-based carrier said the change in bookings happened after US congressional hearings on Ebola last week. The effect lasted a day and bookings quickly returned to normal, airline executives said on a call with analysts and reporters.

Other US airlines have said they have not seen any impact on bookings from concern about the disease.

The virus has killed nearly 4,900 people, mostly in West Africa, and claimed its first victim in the US earlier this month when an infected man died in Dallas.

At the same time, the world’s biggest airline operator said Thursday it earned an all-time best $942 million profit in the June-through-September quarter, nearly double the amount that American and US Airways earned separately last year before their December 2013 merger.

Shares rose 3.9 percent to $38.48.